DRY COSMETIC AND/OR SKIN CARE COMPOSITION

Abstract

The present invention relates to a dry cosmetic and/or skin care composition, a process for preparing a dry cosmetic and/or skin care composition, the use of a dry composition as a cosmetic and/or skin care composition, and the use of a mixture comprising a first component and a second component as a replacement for talc or a talc-containing material in a dry cosmetic and/or skin care composition.

Claims

1. A dry cosmetic and/or skin care composition comprising a mixture of a first component being a natural ground calcium carbonate or a precipitated calcium carbonate, and a second component being a surface-reacted calcium carbonate, wherein the surface-reacted calcium carbonate is a reaction product of natural ground calcium carbonate or precipitated calcium carbonate with carbon dioxide and at least one H.sub.3O.sup.+ ion donor, wherein the carbon dioxide is formed in situ by the at least one H.sub.3O.sup.+ ion donor treatment and/or is supplied from an external source.

2. The dry cosmetic and/or skin care composition according to claim 1, wherein the dry cosmetic and/or skin care composition is a powder, preferably a baby powder and/or a body powder.

3. The dry cosmetic and/or skin care composition according to claim 1, wherein the first component is present in an amount of from 1 wt. % to 99 wt. %, preferably from 30 wt. % to 99 wt. %, more preferably from 50 wt. % to 95 wt. %, even more preferably from 60 wt. % to 95 wt. %, and most preferably from 70 wt. % to 90 wt. %, based on the total weight of the first component and the second component, and wherein the second component is present in an amount of from 1 wt. % to 99 wt. %, preferably from 1 wt. % to 70 wt. %, more preferably from 5 wt. % to 50 wt. %, even more preferably from 5 wt. % to 40 wt. %, and most preferably from 10 wt. % to 30 wt. %, based on the total weight of the first component and the second component.

4. The dry cosmetic and/or skin care composition according to claim 1, wherein the first component is a natural ground calcium carbonate selected from the group consisting of marble, chalk, limestone, and mixtures thereof, or wherein the first component is a precipitated calcium carbonate selected from the group consisting of precipitated calcium carbonates having an aragonitic, vateritic or calcitic crystal form, and mixtures thereof.

5. The dry cosmetic and/or skin care composition according to claim 1, wherein the surface-reacted calcium carbonate is a reaction product of natural ground calcium carbonate selected from the group consisting of marble, chalk, limestone, and mixtures thereof, with carbon dioxide and at least one H.sub.3O.sup.+ ion donor, wherein the carbon dioxide is formed in situ by the at least one H.sub.3O.sup.+ion donor treatment and/or is supplied from an external source, or wherein the surface-reacted calcium carbonate is a reaction product of precipitated calcium carbonate selected from the group consisting of precipitated calcium carbonates having an aragonitic, vateritic or calcitic crystal form, and mixtures thereof, with carbon dioxide and at least one H.sub.3O.sup.+ ion donor, wherein the carbon dioxide is formed in situ by the at least one H.sub.3O.sup.+ ion donor treatment and/or is supplied from an external source.

6. The dry cosmetic and/or skin care composition according to claim 1, wherein the at least one H.sub.3O.sup.+ ion donor is selected from the group consisting of hydrochloric acid, sulphuric acid, sulphurous acid, phosphoric acid, citric acid, oxalic acid, an acidic salt, acetic acid, formic acid, and mixtures thereof, preferably the at least one H.sub.3O.sup.+ ion donor is selected from the group consisting of hydrochloric acid, sulphuric acid, sulphurous acid, phosphoric acid, oxalic acid, H.sub.2PO.sub.4.sup.−, being at least partially neutralised by a cation selected from Li.sup.+, Na.sup.+ and/or K.sup.+, HPO.sub.4.sup.2−, being at least partially neutralised by a cation selected from Li.sup.+, Na.sup.+, K.sup.+, Mg.sup.2+, and/or Ca.sup.2+, and mixtures thereof, more preferably the at least one H.sub.3O.sup.+ ion donor is selected from the group consisting of hydrochloric acid, sulphuric acid, sulphurous acid, phosphoric acid, oxalic acid, or mixtures thereof, and most preferably, the at least one H.sub.3O.sup.+ ion donor is phosphoric acid.

7. The dry cosmetic and/or skin care composition according to claim 1, wherein the first component has a volume median particle size d.sub.50 from 0.1 to 50 μm, preferably from 0.5 to 40 μm, more preferably from 0.5 to 20 μm, even more preferably from 0.5 to 10 μm, and most preferably from 0.8 to 8 μm, and/or wherein the first component has a specific surface area of from 0.5 m.sup.2/g to 30 m.sup.2/g, preferably from 1 m.sup.2/g to 20 m.sup.2/g, and more preferably from 2 m.sup.2/g to 15 m.sup.2/g, measured using nitrogen and the BET method.

8. The dry cosmetic and/or skin care composition according to claim 1, wherein the second component has a volume median particle size d.sub.50 from 0.5 to 50 μm, preferably from 1 to 40 μm, more preferably from 1.2 to 30 μm, and even more preferably from 1.5 to 15 μm, and most preferably from 3 to 10 μm, and/or wherein the second component has a specific surface area of from 15 m.sup.2/g to 200 m.sup.2/g, preferably from 20 m.sup.2/g to 180 m.sup.2/g, more preferably from 25 m.sup.2/g to 160 m.sup.2/g, and most preferably from 30 m.sup.2/g to 90 m.sup.2/g, measured using nitrogen and the BET method.

9. The dry cosmetic and/or skin care composition according to claim 1, wherein the dry cosmetic and/or skin care composition is free of talc or a talc-containing material.

10. The dry cosmetic and/or skin care composition according to claim 1, wherein the dry cosmetic and/or skin care composition comprises one or more of a further component, preferably the one or more further component is selected from the group consisting of a fragrance, an aroma, an antibacterial and/or an antiseptic agent, a fatty acid or a salt thereof, a fatty alcohol, a vegetable or a synthetic oil, a polymeric carbohydrate, a mineral additive, a pigment, a salt, and mixtures thereof.

11. A process for preparing the dry cosmetic and/or skin care composition according to claim 1, comprising the following steps: a) providing a first component being a natural ground calcium carbonate or a precipitated calcium carbonate, b) providing a second component being a surface-reacted calcium carbonate, wherein the surface-reacted calcium carbonate is a reaction product of natural ground calcium carbonate or precipitated calcium carbonate with carbon dioxide and at least one H.sub.3O.sup.+ ion donor, wherein the carbon dioxide is formed in situ by the at least one H.sub.3O.sup.+ ion donor treatment and/or is supplied from an external source, c) mixing the first component of step a) with the second component of step b).

12. The process according to claim 11, wherein the first component of step a) and the second component of step b) is provided in dry form and wherein mixing step c) is a dry blending step, or wherein the first component of step a) and/or the second component of step b) is provided in form of an aqueous suspension, preferably in form of a slurry, and wherein the process further comprises a step d) of drying the mixture obtained in step c), preferably step d) is a spray drying step or a superheated steam drying step, and more preferably a spray drying step.

13. A method of using the dry cosmetic and/or skin care composition of claim 1, comprising applying the dry cosmetic and/or skin care composition to skin.

14. The method according to claim 13, wherein the dry composition is used for absorbing fluids, for decreasing skin friction, for modifying the skin feel, and/or for modifying the skin appearance.

15. A talc or talc-containing material replacement in a dry cosmetic and/or skin care composition, comprising a first component being a natural ground calcium carbonate or a precipitated calcium carbonate, and a second component being a surface-reacted calcium carbonate, wherein the surface-reacted calcium carbonate is a reaction product of natural ground calcium carbonate or precipitated calcium carbonate with carbon dioxide and at least one H.sub.3O.sup.+ ion donor, wherein the carbon dioxide is formed in situ by the at least one H.sub.3O.sup.+ ion donor treatment and/or is supplied from an external source.

Description

FIGURES

[0276] FIG. 1: FIG. 1 shows the sensorial properties of inventive composition 1 to 4 and comparative composition 1 as evaluated by a panel of eight assessor.

[0277] FIG. 2: FIG. 2 shows the ad-/absorption of moisture by inventive composition 1 to 4 and comparative composition 1. The change in weight of the respective composition is plotted against the relative humidity, in which the sample was stored for 360 min by 23° C.

[0278] FIG. 3: FIG. 3 refers to the overall fragrance release of inventive composition 5 to 8 and comparative composition 2 as well as comparative composition CC-Y immediately after loading of the composition with fragrance (t=0) and after 30 days (t=30 d). The release of the fragrance was measured at 36.5° C. (body temperature) by SPME-GC-MS.

EXAMPLES

1. Measurement Methods

[0279] In the following, measurement methods implemented in the examples are described.

[0280] Particle Size Distribution

[0281] Volume determined median particle size d.sub.50 (vol) and the volume determined top cut particle size d.sub.98 (vol) was evaluated using a Malvern Mastersizer 3000 Laser Diffraction System (Malvern Instruments Plc., Great Britain). The d.sub.50 (vol) or d.sub.98 (vol) value indicates a diameter value such that 50% or 98% by volume, respectively, of the particles have a diameter of less than this value. The raw data obtained by the measurement was analyzed using the Mie theory, with a particle refractive index of 1.57 and an absorption index of 0.005. The methods and instruments are known to the skilled person and are commonly used to determine particle size distributions of fillers and pigments. The measurement was carried out in an aqueous solution of 0.1 wt.-% Na.sub.4P.sub.2O.sub.7. The samples were dispersed using a high-speed stirrer and supersonicated.

[0282] Specific Surface Area (SSA)

[0283] The specific surface area was measured via the BET method according to ISO 9277:2010 using nitrogen, following conditioning of the sample by heating at 250° C. for a period of 30 minutes. Prior to such measurements, the sample was filtered within a Büchner funnel, rinsed with deionised water and dried at 110° C. in an oven for at least 12 hours.

[0284] Intra-Particle Intruded Specific Pore Volume (in cm.sup.3/g)

[0285] The specific pore volume was measured using a mercury intrusion porosimetry measurement using a Micromeritics Autopore V 9620 mercury porosimeter having a maximum applied pressure of mercury 414 MPa (60 000 psi), equivalent to a Laplace throat diameter of 0.004 μm (˜ nm). The equilibration time used at each pressure step was 20 seconds. The sample material was sealed in a 5 cm.sup.3 chamber powder penetrometer for analysis. The data were corrected for mercury compression, penetrometer expansion and sample material compression using the software Pore-Comp (Gane, P. A. C., Kettle, J. P., Matthews, G. P. and Ridgway, C. J., “Void Space Structure of Compressible Polymer Spheres and Consolidated Calcium Carbonate Paper-Coating Formulations”, Industrial and Engineering Chemistry Research, 35(5), 1996, p 1753-1764.).

[0286] The total pore volume seen in the cumulative intrusion data can be separated into two regions with the intrusion data from 214 μm down to about 1-4 μm showing the coarse packing of the sample between any agglomerate structures contributing strongly. Below these diameters lies the fine inter-particle packing of the particles themselves. If they also have intra-particle pores, then this region appears bi-modal, and by taking the specific pore volume intruded by mercury into pores finer than the modal turning point, i.e. finer than the bi-modal point of inflection, the specific intra-particle pore volume is defined. The sum of these three regions gives the total overall pore volume of the powder, but depends strongly on the original sample compaction/settling of the powder at the coarse pore end of the distribution.

[0287] By taking the first derivative of the cumulative intrusion curve the pore size distributions based on equivalent Laplace diameter, inevitably including pore-shielding, are revealed. The differential curves clearly show the coarse agglomerate pore structure region, the inter-particle pore region and the intra-particle pore region, if present. Knowing the intra-particle pore diameter range it is possible to subtract the remainder inter-particle and inter-agglomerate pore volume from the total pore volume to deliver the desired pore volume of the internal pores alone in terms of the pore volume per unit mass (specific pore volume). The same principle of subtraction, of course, applies for isolating any of the other pore size regions of interest.

[0288] Sorption Kinetics

[0289] 4 grams of material was taken in duplicates and the material were exposed for 360 min to the specific temperature and Relative Humidity (RH). The temperature had been kept constant for a complete cycle at 23° C. and RH followed the given cycle, i.e. 10%-30%-50%-70%-85%-70%-50%-30%-10%. The weight change had been recorded at end of the cycle (360 minutes) and a graph had been plotted between change in weight at specific RH to reflect the sorption kinetic of the sample.

[0290] Sensorial Analysis

[0291] The products were subjected to descriptive analysis (ref. Norm ISO 13299) carried out by a panel of eight assessors. The sessions were performed on 22 May 2019 at 12.00 o'clock, at 14.30 o'clock and at 16.30 o'clock in a room dedicated to sensory analysis and equipped in compliance with UNI ISO 8589 standard. During a preliminary session, the Panel members, examining the products, developed a common vocabulary and contributed, together with the Panel leader, to define scales and terms of evaluation.

[0292] The following attributes were thus identified and defined:

[0293] Visual attributes (appearance): [0294] Colour (product's colour as it is): light-dark [0295] Powder compaction (act of compacting): low-high [0296] Attributes related to the first contact (pick up): Cushion effect (when the product is between the thumb and forefinger, the movement is dampened): low-high [0297] Slipperiness (ease of moving the product between the thumb and forefinger): low-high Attributes evaluated during the application: [0298] Spreadability (ease of distribution the product over the skin): low-high [0299] Covering (degree product covers the imperfection of the skin): low-high [0300] Whitening (degree skin remains white when the product is rubbed): low-high Attributes evaluated after the application (after-feel): [0301] Smoothness (degree skin, not marked by roughness): low-high [0302] Shiny on the skin (amount of light reflected on skin): low-high

[0303] The evaluation of each attribute was made using the same quantity of each sample. The product has been tested in a “blind” form and differentiated from the reference sample only with a code. Visual attributes were evaluated on the product as it is. For the attributes related to first contact, the assessment has been made between the fingertips and for those related to the product application and after-feel samples were tested on the defined area of the forearm. Using a skin scribe, 2 circles of 5.1 cm each were marked in the volar area of the forearm. The circle located near the elbows was identified as Site 1, and the circle located near the wrists was identified as Site 2. The detection sheet contained, for each attribute, non structured linear scales, defined at the extremities (0-10), where to indicate the placement of the sample under analysis. On the scales, the reference position has been assumed as central (value=5) for all the sensory attributes because were considered to have potentially a higher or lower intensity. The assessor had to indicate on the scale the degree of intensity of the examined samples in comparison with the reference sample. Assessors made 3 evaluation sessions.

[0304] Fragrance Release

[0305] The samples were analysed for their release properties stored absence of light and at T0 (immediately after loading) and after 30 days (T30). 1 g of the sample (with 3 replicates) was weighed into Head-Space Vials and intensively homogenized by the GC-MS Autosampler shaker. The release of the fragrance was measured at 36.5° C. (body temperature) by SPME-GC-MS.

[0306] Patch Testing

[0307] The product is tested on 20 adult volunteers of both sexes, selected after the application of the criteria for inclusion/non-inclusion.

[0308] Excluded from the test: [0309] Children and persons below the age of consent [0310] Pregnant or lactating women [0311] Subjects affected by dermatitis [0312] Subjects with history of allergic skin reaction [0313] Subjects under anti-inflammatory drug therapy (either steroidal or non-steroidal) [0314] Subjects who participated in analogue tests in the last two months.

[0315] Before the test starts, all the participants are made aware of the purpose and nature of the study and of any foreseeable risks involved in participation in the study and give written informed consent to the experimentation. A form registering the date and the products tested is completed for each volunteer. The application of the product is made by technically qualified and trained persons with the supervision of a medical dermatologist. Skin evaluations are made by a dermatologist. It has been realized an occlusive patch test using the Curatest F patches applied to the volar area of the forearm.

[0316] The visual assessment of skin irritation is made in double: 24 hours after Curatest F application (30 minutes after patch removal) and 48 hours after Curatest F application (24 hours after patch removal). The evaluation parameters and the grading of skin reactions are reported here below:

[0317] Erythema:

[0318] 0=no evidence of erythema; 0.5=minimal or doubtful erythema; 1=slight redness, spotty and diffuse; 2=moderate, uniform redness; 3=strong uniform redness; 4=fiery redness.

[0319] Edema:

[0320] 0=no edema; 1=light edema (hardly visible); 2=light edema (clearly visible); 3=moderate edema; 4=strong edema (extended beyond the application area).

[0321] The sum of erythema and edema score is defined “irritation index”. Irritation index value at 30 minutes and 24 hours after patch removal (24 and 48 hours after product application) are recorded on the volunteer's form.

2. The Components

[0322] Natural Ground Calcium Carbonate NGCC

[0323] A high purity natural calcium carbonate having a d.sub.50 (vol) in the range of 1.8 to 2.6 μm that is commercially available from Omya.

[0324] Surface-Reacted Calcium Carbonate SRCC 1

[0325] Surface-reacted calcium carbonate (SRCC 1) (d.sub.50 vol)=6.6 μm, d.sub.98=13.7 μm, SSA=59.9 m.sup.2/g). The intra-particle intruded specific pore volume is 0.939 cm.sup.3/g (for the pore diameter range of 0.004 to 0.51 μm).

[0326] SRCC was obtained by preparing 350 litres of an aqueous suspension of ground calcium carbonate in a mixing vessel by adjusting the solids content of a ground limestone calcium carbonate from Omya SAS, Orgon having a weight based median particle size d.sub.50 (wt) of 1.3 μm, as determined by sedimentation, such that a solids content of 10 wt.-%, based on the total weight of the aqueous suspension, is obtained. Whilst mixing the slurry at a speed of 6.2 m/s, 11.2 kg phosphoric acid was added in form of an aqueous solution containing 30 wt.-% phosphoric acid to said suspension over a period of 20 minutes at a temperature of 70° C. After the addition of the acid, the slurry was stirred for additional 5 minutes, before removing it from the vessel and drying using a jet-dryer.

[0327] Surface-Reacted Calcium Carbonate SRCC 2

[0328] Surface-reacted calcium carbonate (SRCC 2) (d.sub.50 (vol)=5.1 μm, d.sub.98 (vol)=9.2 μm, SSA=96.1 m.sup.2/g with an intra-particle intruded specific pore volume of 1.588 cm.sup.3/g (for the pore diameter range of 0.004 to 0.4 μm).

[0329] In a mixing vessel, 10 liters of an aqueous suspension of ground limestone calcium carbonate was prepared by adjusting the solids of a ground limestone calcium carbonate having a particle size distribution of 90 wt.-% below 2 μm, based on the total weight of the ground calcium carbonate, such that a solids content of 15 wt.-%, based on the total weight of the aqueous suspension, is obtained. Whilst mixing the slurry, 2.8 kg phosphoric acid was added in form of an aqueous solution containing 30 wt.-% phosphoric acid to said suspension over a period of 10 minutes. Throughout the whole experiment the temperature of the suspension was maintained at 70° C. After the addition of the acid, the suspension was stirred for additional 5 minutes before removing it from the vessel and drying.

3. Preparation of the Dry Cosmetic and/or Skin Care Composition

[0330] Inventive composition 1 to 4 were prepared by the process according to section 3.a) or 3.b) below. Inventive composition 5 to 8 were prepared by the process according to section 3.a) or 3.b) as described below followed by the process according to section 3.c).

[0331] a) Dry Mixing of Components

[0332] The calculated amount of the first component GCC1 in dry form and the second component SRCC1 or SRCC2 in dry form were put in an industrial spiral conical mixer and mixed. The spiral mixing blade inside the mixer initiates a three-dimensional flow of the mixing powders creating a helical upward movement on the periphery and downward flow in the center.

[0333] b) Wet Mixing of Components

[0334] The first component GCC1 was provided in dry form and was re-suspended in an aqueous suspension of SRCC1 or SRCC2 in the indicated ratio. Then the suspended aqueous mixes were dried with the Riera Nadeu Jet Dryer and packed in bags independently.

[0335] c) Loading of Fragrance on the Dry Cosmetic and/or Skin Care Composition

[0336] The dry cosmetic and/or skin care compositions were provided in powder form and were loaded in a Universal Tabletop Mixer Granulator (TMG 1/6, Glatt GmbH, Germany) with a rotor speed of 1000 rpm and a chopper speed of 1000 rpm. A 6 L conical vessel was filled about ⅔ with one of the dry cosmetic and/or skin care compositions. The dry cosmetic and/or skin care composition was then premixed for three minutes, before the fragrance loading with a peristaltic pump (Modell 1B.1003-R/65, Petro Gas Ausrüstungen Berlin GmbH, Germany) was started. The loading was performed at a speed of 2.5 g/min until a fragrance content of 1.5% by weight was achieved. After the indicated amount of fragrance was reached, the peristaltic pump was switched of and the composition was mixed for one further minute.

[0337] d) Examples

[0338] Inventive composition 1 (IC-1): NGCC 90 wt. %, SRCC1 10 wt. %.

[0339] Inventive composition 2 (IC-2): NGCC 90 wt. %, SRCC2 10 wt. %.

[0340] Inventive composition 3 (IC-3): NGCC 70 wt. %, SRCC1 30 wt. %.

[0341] Inventive composition 4 (IC-4): NGCC 70 wt. %, SRCC2 30 wt. %.

[0342] Inventive composition 5 (IC-5): First and second component 98.5 wt. % (NGCC:SRCC1; 9:1 by weight ratio), fragrance 1.5 wt. %.

[0343] Inventive composition 6 (IC-6): First and second component 98.5 wt. % (NGCC:SRCC2; 9:1 by weight ratio), fragrance 1.5 wt. %.

[0344] Inventive composition 7 (IC-7): First and second component 98.5 wt. % (NGCC:SRCC1; 7:3 by weight ratio), fragrance 1.5 wt. %.

[0345] Inventive composition 8 (IC-8): First and second component 98.5 wt. % (NGCC:SRCC2; 7:3 by weight ratio), fragrance 1.5 wt. %.

[0346] Comparative composition (CC-1): Talc 100 wt. %.

[0347] Comparative composition (CC-2): Talc 98.5 wt. %, fragrance 1.5 wt. %.

[0348] Comparative composition (CC-X): SRCC2 100 wt. %

[0349] Comparative composition (CC-Y): SRCC2 98.5 wt. %, fragrance 1.5 wt. %.

4. Results

[0350] a) Sensorial Analysis

[0351] FIG. 1 shows the results for the sensorial analysis of Inventive composition 1 to 4 and comparative composition 1. It can be gathered from FIG. 1 that the inventive compositions show similar or better properties in almost every test aspect compared to the comparative composition 1. For example, all of the inventive compositions 1 to 4 show similar or better properties in terms of the cushion effect, the slipperiness and the powder compaction. Inventive composition 1 provided the best results.

[0352] Furthermore, Table 1 shows the results for the sensorial analysis of Inventive composition 1 to 4 in comparison with comparative composition CC-X (100% SRCC2).

TABLE-US-00001 TABLE 1 Composition Sensorial property CC-X IC-1 IC-2 IC-3 IC-4 Color 7.1 8.1 7.53 7.98 7.8 Powder compaction 5 5 5.83 5.7 5.85 Cushion Effect 4.5 6.5 4.39 5.5 4.4 Slipperiness 5 5 4.2 5.52 4.51 Spreadability 1.8 5 3.8 3.8 3.55 Covering 1.8 4.3 3.69 3.45 3.6 Whitening 1.5 4.3 3.6 3.4 3.5 Smoothness 3.5 4.6 3 3.5 3.49 Shiny on the Skin 5 5 5 5.05 5

[0353] The data shows that the inventive compositions IC-1 to IC-4 show similar or better sensorial properties in all aspects than the comparative composition CC-X, which is a pure surface-reacted calcium carbonate. For example, the inventive compositions IC-1 to IC-4 show a better covering, whitening, and spreadability than the comparative composition CC-X.

[0354] b) Patch Test

[0355] A patch test was performed as described above with each one of inventive composition 1 to 4 and with comparative composition 1. [0356] b1) Patch test result for comparative composition 1 on sensitive skin:

[0357] 20 test subjects being of an age between 24 and 39 years and of male or female sex were tested. None of the test subjects showed evidence of erythema or edema after 30 minutes of patch removal (24 hours after application) or after 24 hours of patch removal (48 hours after application). [0358] b2) Patch test result for the inventive composition 1 on sensitive skin:

[0359] 20 test subjects being of an age between 24 and 39 years and of male or female sex were tested. None of the test subjects showed evidence of erythema or edema after 30 minutes of patch removal (24 hours after application) or after 24 hours of patch removal (48 hours after application). [0360] b3) Patch test result for the inventive composition 2 on sensitive skin:

[0361] 20 test subjects being of an age between 24 and 39 years and of male or female sex were tested. None of the test subjects showed evidence of erythema or edema after 30 minutes of patch removal (24 hours after application) or after 24 hours of patch removal (48 hours after application). [0362] b4) Patch test result for the inventive composition 3 on sensitive skin:

[0363] 20 test subjects being of an age between 24 and 39 years and of male or female sex were tested. None of the test subjects showed evidence of erythema or edema after 30 minutes of patch removal (24 hours after application) or after 24 hours of patch removal (48 hours after application). [0364] b5) Patch test result for the inventive composition 4 on sensitive skin:

[0365] 20 test subjects being of an age between 24 and 39 years and of male or female sex were tested. None of the test subjects showed evidence of erythema or edema after 30 minutes of patch removal (24 hours after application) or after 24 hours of patch removal (48 hours after application).

[0366] The patch test show that inventive compositions 1 to 4 are not irritant to sensitive skin.

[0367] c) Sorption Analysis

[0368] FIG. 2 shows the results of the sorption analysis tests as described above carried out with inventive composition 1 to 4 and comparative composition 1. The comparative composition 1 comprising talc absorbed the least moisture or humidity from the air as shown by the least change in weight of all tested compositions. The inventive composition 3 and 4 comprising 30 wt. % of SRCC1 or SRCC2, respectively, showed the biggest change in weight of the composition due to moisture absorption. Inventive composition 1 and 2 comprising 10 wt. % of SRCC1 or SRCC2, respectively, absorbed less moisture than inventive composition 3 and 4, but more than the comparative composition 1. A high moisture absorption may be advantageous for a dry cosmetic and/or skin care composition, because it may allow for a better absorption of moisture on skin and/or body fluids.

[0369] d) Fragrance Release Studies

[0370] FIG. 3 shows the results for fragrance release study tests as described above carried out with inventive composition 5 to 8 and comparative composition 2. Two different aspects can be compared by the data presented in FIG. 3: (i) the percentage of fragrance released when the sample is subjected to 37° C., either directly after loading (t=0) or after 30 days of storage (t=30), and (b) the difference between fragrance release on time t=0 and time t=30.

[0371] Regarding aspect (i), it can be gathered from FIG. 3 that each one of inventive composition 5 to 8 releases more fragrance from the composition on time t=0, i.e. directly after loading, than the comparative composition 2. More precisely, the comparative composition releases approx. 65% of the loaded fragrance when subjected to a temperature of 37° C., whereas each one of the inventive compositions 5 to 8 releases at least approx. 80% of the fragrance. Inventive composition 7 and 8 release almost all of the loaded fragrance on time t=0. After 30 days of storage, the comparative composition 2 releases only approx. 54% of the initially loaded fragrance compared to at least 73% of the fragrance for each one of the inventive compositions 5 to 8. Inventive composition 7 releases almost 100% of the initially loaded fragrance after 30 days of storage. Thus, the results show that the inventive compositions 5 to 8 show a better fragrance release compared to the comparative composition 2 on time t=0, i.e. directly after loading, and on time t=30, i.e. after 30 days of storage.

[0372] With respect to aspect (ii) of the results, it is to be noted that the difference in fragrance release for a specific composition measured on time t=0 and time t=30 is an indicator for the stability of the composition during storage. For example, a composition might release 100% fragrance immediately after loading, but only 50% fragrance after storage over 30 days. This would be an indicator for an instability or decomposition of the fragrance and/or the composition, since the release profile is different. Comparative composition 2 releases on time t=0 approx. 65% of the fragrance and on time t=30 approx. 54% of the fragrance, which corresponds to a difference of approx. 11%. Thus, it can be gathered from FIG. 3 that the comparative composition 2 shows a certain instability or decomposition during storage. In contrast thereto, inventive composition 5 to 7 show almost the same, if not the same, release profile on time t=0 and on time t=30. Thus, the inventive compositions 5 to 7 show no, or almost no, instability or decomposition during storage. It can be concluded therefrom that the inventive compositions 5 to 7 are more stable compared to comparative composition 2.

[0373] Furthermore, Table 2 as well as FIG. 3 shows the results for the fragrance release test of Inventive compositions IC-5 to IC-8 in comparison with comparative composition CC-Y (98.5 wt. % SRCC2; 1.5 wt. % fragrance).

TABLE-US-00002 TABLE 2 Fragrance release Time t = 0 t = 30 d CC-Y  6.80%  0.70% IC-5 79.50% 80.40% IC-6 80.00% 77.10% IC-7   100%   100% IC-8 98.70% 73.60%

[0374] The data in Table 2 and FIG. 3 shows that the inventive compositions IC-5 to IC-8 have a much higher fragrance release directly after leading (t=0) and after 30 days of storage (t=30 d) than the comparative composition CC-Y, which is a surface-reacted calcium carbonate combined with fragrance. Moreover, the data in Table 2 shows that the drop of fragrance release during storage, i.e. from t=0 to t=30 d, is much higher for CC-Y than for IC-5 to IC-8, which means that the stability of the fragrance in CC-Y is very low. For IC-5 to IC-8 there is either no decrease in fragrance release over time, or only a minor decrease. Thus, the stability of IC-5 to IC-8 is much better than the stability of CC-Y.