Non-therapeutic oral use of a composition for whitening and/or lightening the skin comprising cystine and glutathione in a cystine-glutathione ratio ranging from 1.5 to 4

Abstract

The non-therapeutic, cosmetic, oral use of a composition as an active ingredient for whitening and/or lightening the skin and/or depigmenting the skin, in particular for reducing the size of brown spots, including at least cystine and glutathione in a cystine/glutathione ratio ranging from 1.5 to 4, the composition advantageously further comprising glycine and/or glutamine Preferably, the composition also includes at least one component selected from the group formed by zinc or one of its salts, copper or one of its salts, selenium or one of its salts, vitamins B, in particular B3, B5, B6 and/or B8, vitamin E, melon juice extracts, horsetail extracts and mixtures of these components.

Claims

1. A non-therapeutic, cosmetic, oral composition for whitening and/or lightening the skin and/or depigmenting the skin, comprising at least cystine and glutathione in a cystine/glutathione ratio of 3, wherein the cystine is present in an amount from 30 to 60% by weight based on the total weight of said composition, wherein the glutathione is present from 10 to 30% by weight based on the total weight of said composition, and wherein the composition does not comprise gooseberry extract.

2. The composition according to claim 1, wherein the cystine comprises less than 5 ppm of heavy metals.

3. The composition according to claim 1, wherein the composition comprises glycine in a cystine/glycine ratio of from 7 to 9.5.

4. The composition according to claim 1, wherein the composition comprises glutamine in a cystine/glutamine ratio of from 3.5 to 5.0.

5. The composition according to claim 1, wherein the composition comprises calcium ascorbate in a cystine to calcium ascorbate ratio of from 3.5 to 5.5.

6. The composition according to claim 1, wherein the composition comprises at least one component selected from the group consisting of zinc or one of its salts, copper or one of its salts, selenium or one of its salts, one or more B vitamins, vitamin E, melon juice extracts, horsetail extracts and mixtures thereof.

7. The composition according to claim 1, wherein the composition comprises glycine in a cystine/glycine ratio of from 7 to 9.5, glutamine in a cystine/glutamine ratio of from 3.5 to 5.0, and calcium ascorbate in a cystine to calcium ascorbate ratio of from 3.5 to 5.5.

8. A method of preparing the composition according to claim 7, comprising the following steps: providing cystine; providing glutathione; providing glycine; providing glutamine; providing calcium ascorbate; optionally providing at least one component selected from the group consisting of zinc or one of its salts, copper or one of its salts, selenium or one of its salts, B vitamins, vitamin E, melon juice extracts, horsetail extracts, and mixtures thereof; wherein the cystine and glutathione are present in a cystine/glutathione ratio of 3, wherein the cystine is present in an amount from 30 to 60% by weight based on the total weight of said composition, wherein the glutathione is present from 10 to 30% by weight based on the total weight of said composition, and wherein the composition does not comprise gooseberry extract; and mixing the cystine, the glutathione, the glycine, the glutamine, the calcium ascorbate and, optionally, the at least one component.

9. A non-therapeutic, cosmetic method for whitening and/or lightening and/or depigmenting the skin, comprising a step of administering to an individual orally a non-therapeutic, cosmetic, oral composition for whitening and/or lightening the skin and/or depigmenting the skin, comprising at least cystine and glutathione in a cystine/glutathione ratio of 3, wherein the cystine is present in an amount from 30 to 60% by weight based on the total weight of said composition, wherein the glutathione is present from 10 to 30% by weight based on the total weight of said composition, and wherein the composition does not comprise gooseberry extract.

10. The method according to claim 9, wherein, the following daily doses of active material are administered: cystine in a content ranging from 0.001 to 2 g; glutathione in a content ranging from 0.001 to 1 g; glycine in a content ranging from 0.001 to 1 g; glutamine in an amount of 0.001 to 1 g; and calcium ascorbate in an amount of 0.001 to 1 g.

11. The method according to claim 9, wherein the following daily doses are administered: vitamin B3 in a content corresponding to a content ranging from 0.01 to 0.03 g of nicotinamide; vitamin B5 in a content corresponding to a content ranging from 0.010 to 0.015 g of calcium pantothenate; vitamin B6 in a content corresponding to a content ranging from 0.001 to 0.005 g of pyridoxine hydrochloride; vitamin B8 in a content corresponding to a content ranging from 0.0001 to 0.0005 g of biotin; zinc or a salt thereof in a zinc content of from 0.005 to 0.015 g; copper or a salt thereof in a copper content of from 0.001 to 0.002 g; vitamin E in a content corresponding to a content of from 0.005 to 0.1 g; melon juice extract in a content of from 0.005 to 0.015 g; and horsetail extract in a content of from 0.001 to 0.01 g.

12. A non-therapeutic, cosmetic method according to claim 9, for reducing the size of pigmentary brown spots.

Description

DETAILED DESCRIPTION

(1) The composition used according to the invention comprises cystine which is an amino acid composed of two cysteine monomers linked by a disulphide bridge.

(2) Preferably, the cystine used is a very pure cystine in which the main impurities are in trace amounts, in particular the used cystine comprises less than 5 ppm of heavy metals, advantageously it comprises less than 5 ppm of heavy metals, less than 100 ppm of sulphates and less than 0.004% of ammonium. The determination of heavy metals is performed by colorimetry in the presence of thioacetamide (Ph. Eur. 9th Ed. 2.4.8, limit test D), the determination of sulphates is carried out in the presence of barium salts, in an acid medium (Ph. Eur. 9eme Ed 2.4.13), the determination of ammonium is carried out by ion exchange chromatography with post-column derivatisation with ninhydrin (Ph. Eur. 9th Ed 2.2.56). Preferably the cystine used in the present invention is the cystine marketed under the name Traced L-Cystine by the company BCF Life Sciences.

(3) Cystine is used in the composition according to the invention in the form of a free amino acid, advantageously the amount of cystine in said composition ranges from 30 to 60%, preferably from 35 to 45% by weight with respect to the total weight of said composition.

(4) The composition used according to the invention also comprises glutathione. Glutathione is a pseudo-tripeptide formed by the condensation of glutamic acid, cysteine and glycine. Glutathione is used in the composition according to the invention in free form. In particular, the glutathione used in the present invention is glutathione as such, in peptide form, it is not in yeast form.

(5) Indeed, in some applications where the use of glutathione is not allowed, yeast is used instead of glutathione. Yeast generally contains glutathione in an amount that cannot always be determined. Furthermore, the activity/efficiency of a given amount of yeast does not always correspond to the activity/efficiency of the same amount of free glutathione. Therefore, when yeast is used, it may be difficult to establish the cystine/glutathione ratio.

(6) Advantageously, the glutathione used in the composition according to the present invention is in the reduced form known as GSH form.

(7) Preferably, the amount of glutathione in the composition used according to the invention ranges from 10 to 30%, preferably from 15 to 25% by weight based on the total weight of said composition.

(8) Advantageously, the composition used according to the invention comprises glutamine Glutamine is an amino acid used in the composition according to the invention in free form.

(9) Preferably, glutamine is used in the composition according to the invention in a cystine/glutamine ratio ranging from 3.5 to 5.0, preferably ranging from 4.0 to 4.5.

(10) Preferably, the amount of glutamine in the composition used according to the invention ranges from 3 to 20%, preferably from 5 to 15% by weight based on the total weight of said composition.

(11) Advantageously, the composition used according to the invention comprises glycine. Glycine is an amino acid used in the composition according to the invention in free form.

(12) Preferably, glycine is used in the composition according to the invention in a cystine/glycine ratio ranging from 7 to 9.5, preferably ranging from 8.0 to 8.5.

(13) Preferably, the amount of glycine in the composition used according to the invention ranges from 1 to 10%, preferably from 2 to 8% by weight based on the total weight of said composition.

(14) Advantageously, the composition used according to the invention comprises calcium ascorbate, also called vitamin C.

(15) Preferably, calcium ascorbate is used in the composition according to the invention in a cystine to calcium ascorbate ratio ranging from 3.5 to 5.5, preferably ranging from 4.0 to 5.0.

(16) Preferably, the amount of calcium ascorbate in the composition used according to the invention ranges from 3 to 20%, preferably from 5 to 15% by weight based on the total weight of said composition.

(17) The composition used according to the invention comprises at least one component selected from the group formed by zinc or one of its salts, copper or one of its salts, selenium or one of its salts, vitamins B, in particular B3, B5, B6 and/or B8, vitamin E, melon juice extracts and horsetail extracts, as well as mixtures of these components.

(18) In general, for the purposes of this text, salt means any salt that is adequately safe.

(19) The amount of vitamin B3 in the composition used according to the present invention ranges from 0.5 to 10%, preferably from 1 to 5% by weight based on the total weight of said composition.

(20) Vitamin B3 (or vitamin PP) may be present in the food supplement in the form of one or more compounds such as nicotinamide (or niacinamide), nicotinic acid (or niacin), nicotinyl alcohol, and salts and derivatives thereof.

(21) Derivatives include nicotinic acid esters such as, for example, tocopheryl nicotinate, nicotinic amino acids, carboxylic acid esters of nicotinic alcohol, nicotinic acid N-oxide and N-oxydeniacinamide.

(22) The amount of vitamin B3 in the composition used according to the present invention ranges from 0.5 to 10%, preferably from 1 to 5% by weight based on the total weight of said composition.

(23) Advantageously, the vitamin B3 content in the composition used corresponds to the maximum content authorized by the regulations in force.

(24) Vitamin B5 is pantothenic acid. It may be present in the dietary supplement in the form of pantothenic acid or as a salt of this acid.

(25) Preferably, calcium pantothenate is used in the composition according to the invention.

(26) The amount of vitamin B5 in the composition used according to the present invention ranges from 0.05 to 5%, preferably from 0.5 to 3% by weight based on the total weight of said composition.

(27) Advantageously, the vitamin B5 content of the composition used according to the invention corresponds to the maximum content authorized by the regulations in force.

(28) Vitamin B6 may be present in the composition used according to the present invention in the form of one or more compounds such as pyridoxine, pyridoxic acid, pyridoxine esters such as pyridoxine tripalmitate, pyridoxine amines such as pyridoxamine, as well as their salts and derivatives.

(29) As derivatives, we may mention the compounds selected from the group formed by pyridoxal and pyridoxal phosphate.

(30) Preferably, pyridoxine hydrochloride is used in the composition used according to the present invention.

(31) The amount of vitamin B6 in the composition used according to the present invention ranges from 0.01 to 5%, preferably from 0.05 to 1% by weight with respect to the total weight of said composition

(32) Advantageously, the vitamin B6 content in the composition used according to the present invention corresponds to the maximum content authorized by the regulations in force.

(33) The amount of vitamin B8 in the composition used according to the present invention ranges from 0.001 to 0.5%, preferably from 0.005 to 0.1% by weight based on the total weight of said composition.

(34) Advantageously, the vitamin B8 content in the composition used according to the present invention corresponds to the maximum content authorized by the regulations in force.

(35) Of course, the salts used in the formulation of the composition used according to the present invention are selected for their safety. Examples include zinc, copper and selenium salts in chelated forms with amino acids.

(36) The amount of zinc in the composition used according to the present invention ranges from 0.1 to 2%, preferably from 0.5 to 1.2% by weight based on the total weight of said composition.

(37) Advantageously, the zinc content in the composition corresponds to the maximum content authorized by the regulations in force.

(38) The amount of copper in the composition used according to the present invention ranges from 0.01 to 1%, preferably from 0.05 to 0.5% by weight with respect to the total weight of said composition

(39) Advantageously, the copper content in the composition corresponds to the maximum content authorized by the regulations in force.

(40) The amount of selenium in the composition used according to the present invention ranges from 0.0005 to 0.05%, preferably from 0.001 to 0.01% by weight with respect to the total weight of said composition.

(41) Advantageously, the selenium content in the composition corresponds to the maximum content authorized by the regulations in force.

(42) Advantageously, the composition used according to the invention comprises vitamin E.

(43) Preferably, the vitamin E is used in the composition according to the invention in a cystine/vitamin E ratio of from 30 to 36, preferably from 32 to 34.

(44) Preferably, the amount of vitamin E in the composition used according to the invention ranges from 0.5 to 10%, preferably from 1 to 4% by weight based on the total weight of said composition.

(45) Advantageously, the composition used according to the invention comprises horsetail extract.

(46) Preferably, the amount of horsetail extract in the composition used according to the invention ranges from 0.1 to 2%, preferably from 0.5 to 1.5% by weight based on the total weight of said composition.

(47) Advantageously, the composition used according to the invention does not comprise gooseberry extract.

(48) Advantageously, the composition used according to the invention comprises a melon juice extract.

(49) Preferably, the amount of melon juice extract in the composition used according to the invention ranges from 0.5 to 2.5%, preferably from 1 to 2% by weight based on the total weight of said composition.

(50) Advantageously, the composition used according to the invention does not comprise mandarin extract.

(51) According to a particular mode of the invention, the composition used according to the invention does not comprise tyrosinase inhibiting plant extracts.

(52) According to another particular mode of the invention, the composition used according to the invention does not comprise at least one plant extract selected from the following plant extracts: extracts of arbutus, bearberry, lingonberry, callune vulgaris, ericaceae, rosaceae, saxifragaceae, liquorice, Japanese mulberry, artichoke, yarrow, matricaria, skullcap, grape, cranberry, maritime pine, grape seed, angelica, polypodean fern, tea, sugar cane, apple, rowan, grape, citrus, chestnut, false pepper, pomegranate, strawberry, geranium, intermediate chickweed, sea buckthorn, honeysuckle, blackcurrant, evening primrose, oregano, thyme, ginseng, kudzu, corn, aloe, blackberry, blueberry, chicory, mushroom extracts and extracts of Rainbow brown algae.

(53) Advantageously, the composition is prepared by mixing the various components in the form of powders.

(54) Advantageously, the composition used in accordance with the invention may additionally comprise a physiologically acceptable vehicle, suitable for oral use, such as in particular an aqueous phase.

(55) The composition used in accordance with the invention may be formulated with the excipients usually used in compositions intended for oral administration, in particular humectants, thickeners, texturing agents, flavouring agents, coating agents, preservatives, antioxidants, colourings, plant extracts.

(56) Of course, the person skilled in the art will take care to choose these excipients so as not to alter the properties of the said composition.

(57) The composition used in accordance with the invention may be formulated according to one of the following presentations: a capsule, a drag?e, a tablet, a soft or hard capsule, or a beverage, a suspension, a solution or a gel.

(58) The formulation of the said composition in accordance with the invention involves conventional processes which are part of the general skills of the person skilled in the art.

(59) The composition according to the present invention can be obtained by mixing the various components of the composition in the required ratios and/or amounts.

(60) The present invention is further directed to a process for preparing the composition used according to the invention comprising the following steps: have cystine; have glutathione; have glycine; have glutamine; have calcium ascorbate; optionally have at least one component selected from the group consisting of zinc or one of its salts, copper or one of its salts, selenium or one of its salts, vitamins B, in particular B3, B5, B6 and/or B8, vitamin E, melon juice extracts and horsetail extracts, and mixtures of these components carry out the mixing of cystine, glutathione, glycine, glutamine, calcium ascorbate and at least one possible other component.

(61) As already mentioned, the present invention is intended for cosmetic use, by the oral route, of a composition as active ingredient for whitening and/or lightening the skin and/or depigmenting the skin and in particular for reducing the size of pigmentary brown spots, the said composition comprising at least cystine and glutathione in a cystine/glutathione ratio ranging from 1.5 to 4.

(62) The use of the composition according to the invention does not belong to the therapeutic field. It is a nutraceutical, non-therapeutic composition.

(63) Said use can also be described as a dietary supplement dedicated to whitening and/or lightening the skin and/or depigmenting the skin, in particular to reduce the size, attenuate or even remove brown pigmentation spots, or prevent, reduce and/or treat an alteration of the skin tone. More particularly, the said use makes it possible to reduce, attenuate and eliminate skin pigmentation defects such as melasma or pregnancy mask, and lentigos, particularly senile lentigos.

(64) The cosmetic treatment method according to the invention is also intended to prevent and/or treat the signs of skin ageing, in particular senescence spots.

(65) There are various methods of assessing skin colour in vivo including instrumental and visual assessment methods. Instrumental, more objective evaluation methods are preferred, particularly on the grounds that the effects of lightening/whitening/depigmenting products are slow to take effect.

(66) In the cosmetic field, a commonly used method to assess skin color is the measurement of L*a*b* values by spectrophotometry.

(67) The system classically used to evaluate the colour is the CIELab system in which the following parameters are defined: L*, the lightness derived from the luminance of the surface, defines the axis from black/dark (0) to white/light (100), a* defines the axis from green (?100) to red (+100), b* defines the axis from blue (?100) to yellow (+100).

(68) The L* parameter is a good marker for assessing skin lightening/whitening: the lighter the skin, the higher the L* value.

(69) Generally, a variation of the L* parameter of the order of 1% is a significant result. Nevertheless the best description of lightening/whitening is given by combining the parameters L* and b* to define the Individual Typology Angle (ITA) Petit L., Pierard G E, Skin lightening products revisited, International Journal of Cosmetic Science, 2003; 25. 169.-181.

(70) The ITA is calculated using the formula:
ITA=ArcTan[(L*?50)/b*]?(180/?)

(71) A change in ITA of about 5% is a significant result.

(72) The evaluation of the pigmentary brown spots, in particular the evolution of their surface (in mm2), is measured by pixelation, for example on the face in the cheek area, by comparing digital photographs with crossed polarization taken at the beginning of the experiment (day 0), at mid-experiment (day 45) and at the end of the experiment (day 90).

(73) The present invention also relates to a non-therapeutic, cosmetic method for whitening and/or lightening and/or depigmenting the skin, in particular for reducing the size of pigmentary brown spots, comprising a step of administering to an individual orally a composition comprising at least cystine and glutathione in a cystine/glutathione ratio ranging from 1.5 to 4, preferably from 1.5 to 3, and preferably from 1.5 to 2.5 and advantageously from 1.8 to 2.2.

(74) In particular the invention is directed to a method according to the invention in which the following daily doses of active material are administered: cystine in an amount of 0.001 to 2 g, preferably 0.1 to 1.0 g and preferably about 0.3 to 0.8 g; glutathione in a content of 0.001 to 1 g, preferably 0.05 to 0.5 g and preferably about 0.1 to 0.4 g; glycine in an amount of 0.001 to 1 g, preferably 0.005 to 0.5 g and preferably about 0.01 to 0.1 g; glutamine in an amount of 0.001 to 1 g, preferably 0.01 to 0.5 g and preferably about 0.05 to 0.2 g, calcium ascorbate in an amount of 0.001 to 1 g, preferably 0.01 to 0.5 g and preferably about 0.05 to 0.2 g.

(75) Advantageously, the following daily doses are administered: vitamin B3 at a level corresponding to 0.01 to 0.03 g nicotinamide; vitamin B5 at a level corresponding to 0.010 to 0.015 g of calcium pantothenate; vitamin B6 at a level corresponding to 0.001 to 0.005 g pyridoxine hydrochloride; vitamin B8 at a level corresponding to 0.0001 to 0.0005 g biotin; zinc or a salt thereof with a zinc content of 0.005 to 0.015 g; copper or a salt thereof in a copper content of 0.001 to 0.002 g, vitamin E in a content corresponding to a content of 0.005 to 0.1 g; concentrated melon juice extract in an amount of 0.005 to 0.015 g horsetail extract in an amount of 0.001 to 0.01 g

(76) The process according to the invention is generally implemented by daily administration of the composition used according to the present invention or daily doses according to the present invention. This administration can be done as a single daily dose, two daily doses, three daily doses or even four daily doses, for example at mealtimes, or advantageously in two doses, one in the morning and the other in the evening.

(77) The process according to the invention is generally implemented over a period varying from one to several weeks or even several months. This treatment period can be repeated several times during a year.

(78) The following examples are intended to illustrate the invention without limiting its scope.

Examples

(79) I/Compositions

(80) A composition A according to the invention and a comparative composition B, both in capsule form, are prepared.

(81) In table 1, the ingredients of composition A in mg, the percentage by weight of the ingredients in composition A, and the ingredients of composition B in mg are shown respectively.

(82) To prepare compositions A and B, the ingredients are weighed and mixed at room temperature. The compositions A and B prepared in this way are stable and are put into capsules.

(83) TABLE-US-00001 TABLE 1 Composition A Comparative according to the of weight in composition Ingredients invention in mg composition A B in mg L-Cystine 250.00 40.19 250.00 L-Glutathione 125.00 20.10 L-Glutamine 60.00 9.65 60.00 Glycine 30.00 4.82 30.00 Vitamin E a.i. 50% 15.00 2.41 15.00 Calcium ascorbate 55.00 8.84 55.00 Melon juice 10.00 1.61 10.00 concentrate Dry extract of horsetail 5.00 0.80 5.00 aerial parts Cu-amino acid chelate 7.49 1.20 7.49 a.i. 10% Zn-amino acid chelate 24.99 4.02 24.99 a.i. 20% Se-amino acid chelate 3.50 0.56 3.50 a.i. 1% Vitamin B3 8.91 1.43 8.91 Vitamin B5 (Calcium 6.00 0.97 6.00 Pantothenate) Vitamin B6 1.05 0.17 1.05 (pyridoxine hydrochloride) Vitamin B8 (biotin) 0.15 0.02 0.15 Magnesium stearate 19.91 3.20 13.92 Maltodextrin 130.99 Capsule 118.00 0 118 Total ingredients + 740 100 740 capsule

(84) Two other compositions were prepared: the placebo C and the comparative composition D presented below

(85) Placebo C

(86) The placebo C composition included 622 mg of magnesium stearate in a 118 mg capsule.

(87) Composition D

(88) Composition D comprising the following ingredients shown in Table 2 is prepared by mixing the ingredients at room temperature.

(89) TABLE-US-00002 TABLE 2 Composition A Comparative according to the of weight in composition B Ingredients invention in mg composition A in mg L-Cystine 250.00 40.19 250.00 L-Glutathione 125.00 20.10 L-Glutamine 60.00 9.65 60.00 Glycine 30.00 4.82 30.00 Vitamin E a.i. 50 % 15.00 2.41 15.00 Calcium ascorbate 55.00 8.84 55.00 Melon juice 10.00 1.61 10.00 concentrate Dry extract of horsetail 5.00 0.80 5.00 aerial parts Cu-amino acid chelate 7.49 1.20 7.49 a.i. 10% Zn-amino acid chelate 24.99 4.02 24.99 a.i. 20% Se-amino acid chelate 3.50 0.56 3.50 a.i. 1% Vitamin B3 8.91 1.43 8.91 Vitamin B5 (Calcium 6.00 0.97 6.00 Pantothenate) Vitamin B6 1.05 0.17 1.05 (pyridoxine hydrochloride) Vitamin B8 (biotin) 0.15 0.02 0.15 Magnesium stearate 19.91 3.20 13.92 Maltodextrin 130.99 Capsule 118.00 0 118 Total ingredients + 740 100 740 capsule

(90) II/Measurements of the Activity of the Compositions

(91) The daily amounts shown in Table 3 were administered to each subject for 90 days.

(92) TABLE-US-00003 TABLE 3 L-Cystine L-Glutathione L-Cysteine in mg in mg in mg Composition A according to the 500 250 invention (2 capsules per day) Composition C Placebo (2 capsules per day) Comparative composition B 500 (2 capsules per day) Comparative composition D (1 250 100 capsule per day)

(93) The study was conducted on 120 subjects, double-blind, randomized: 30 subjects were given composition A, 30 subjects were given composition B, 30 subjects were given composition C and 30 subjects were given composition D.

(94) The compositions were administered for 90 days.

(95) Topics

(96) The subjects selected met the following criteria: healthy subjects, age between 30 and 50 years, light skin corresponding to phototypes III and IV on the Fitzpatrick scale and presenting one or more brown spots on the face, i.e. at least one spot whose smallest dimension was at least 2.5 mm in diameter.

(97) Skin colour was assessed spectrophotometrically using a CM 700D spectrophotometer/colourimeter (Konica-Minolta) by measuring the L*a*b* values and calculating the Individual Typology Angle (ITA) value.

(98) The L* parameters of the ITA are used to measure the whitening/lightening of the skin.

(99) Assessment of brown spot reduction was performed by measuring spot size on cross-polarized digital photographs.

(100) Measurements were taken at D=0, D 45 (after 45 days of treatment) and D 90 (after 90 days of treatment).

(101) Table 4 presents the evolution of each criterion (in %) compared to the beginning of the study at D0 and for each composition.

(102) TABLE-US-00004 TABLE 4 Composition Composition Composition Placebo C comp. B comp. D A (2 capsules (2 capsules (2 capsules (1 capsule per day) per day) per day) per day) Brown spot ?16.2%*.sup.? +4.3% +1.4% ?4.4% size.sup.(1) at D 45 Brown spot ?34.4%*.sup.? +4.4% +4.8% ?3.6% size.sup.(1) at D 90 ITA measured +2.2% ?3.5% ?1.8% ?1.0% on the cheek.sup.(2) at D 45 ITA measured +8.7%*.sup.? +0.5% ?0.8% ?1.0% on the cheek.sup.(2) at D 90 L*measured on +0.6% ?0.1% ?0.1% +0.3% the cheek.sup.(3) at D 45 L* measured +1.8%*.sup.? +0.4% ?0.1% +0.1% on the cheek.sup.(3) at D 90 ITA measured +5.1%* ?2.6% ?2.0% ?1.1% on the wrist.sup.(2) at D 45 ITA measured +6.7%* ?0.7% +3.9% +2.0% on the wrist.sup.(2) at D 90 L*measured on +0.8% ?0.4% ?0.5% ?0.3% the wrist.sup.(3) at D 45 L* measured +1.1%* ?0.1% +0.4% 0.0% on the wrist.sup.(3) at D 90 .sup.(1)measurement of the evolution in % of the surface (mm2) of the brown spots, .sup.(2)measurement of the evolution of the individual typology angle ITA, .sup.(3)measurement of the evolution of the clarity L*, *statistically significant change compared to D0, .sup.?the variations observed with composition A are significantly different from those observed with the 3 other compositions.

(103) The composition according to the invention allows a significant reduction in the size of brown spots (?16.2% at 45 days and ?34.4% at 90 days), part of the spots are no longer visible, the skin appears more even.

(104) It also allows an increase in skin lightening/whitening measured by an increase in the L* parameter on both the cheek (+0.6% at 45 days and +1.8% at 90 days), and the wrist (+0.8% at 45 days and +1.1% at 90 days), and a significant increase in the ATI? on both the cheek (+2.2% at 45 days and +8.7% at 90 days) and the wrist (+5.1% at 45 days and +6.7% at 90 days)

(105) The proportion of subjects showing a reduction in the surface area of brown spots at 90 days is 87% with composition A according to the invention, this value is high and significantly different from those obtained with the placebo composition C (40%), with composition B (50%) and with composition D (39%).

(106) Similarly, the proportion of subjects showing skin lightening/whitening at 90 days with an increase in the ITA value on the cheek is 77%, which is significantly higher than those of the placebo composition C (43%), B (47%) and D (39%).

(107) There is also a whitening/lightening effect on brown spots.