TRANSPARENT SOLID COSMETIC

Abstract

The purpose of the present invention is to provide a transparent solid cosmetic that colors when applied to the skin. A transparent solid cosmetic that changes color after application, wherein the transparent solid cosmetic includes two or more amino-acid-type gelling agents including dibutyl lauroyl glutamide (GP-1) and dibutyl hexanoyl glutamide (EB-21), and has a transmittance of 50% or higher.

Claims

1. A colorless transparent solid cosmetic, which is a transparent solid cosmetic which changes its color after it is applied, comprising two or more amino acid based gelling agents including dibutyl lauroyl glutamide (GP-1) and dibutyl ethylhexanoyl glutamide (EB-21); a water soluble organic acid selected from a group consisting of malic acid, citric acid, succinic acid and lactic acid; an oil agent selected from a group consisting of triethylhexanoin, diethylhexyl succinate, tricyclodecanemethyl isononanoate and dipentaerythrityl hexaisononanoate; and isostearic acid, and having transmittance of 50% or higher.

2. The colorless transparent solid cosmetic according to claim 1, wherein the concentration of the amino acid based gelling agent is 3 to 8%.

3. The colorless transparent solid cosmetic according to claim 1, wherein the blending ratio of dibutyl lauroyl glutamide (GP-1) and dibutyl ethylhexanoyl glutamide (EB-21) is 75:25 to 40:60.

4. The colorless transparent solid cosmetic according to claim 1, wherein the water soluble organic acid is an acid having pH of 3 or less in 0.1% aqueous solution.

5. The colorless transparent solid cosmetic according to claim 1, wherein the water soluble organic acid is citric acid.

6. The colorless transparent solid cosmetic according to claim 1, further comprising a hydrocarbon oil and an oil agent.

7. The colorless transparent solid cosmetic according to claim 6, wherein the blending proportion of the hydrocarbon oil is 25 to 75% by weight.

8. The colorless transparent solid cosmetic according to claim 6, wherein the hydrocarbon oil is hydrogenated polyisobutene.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0013] FIG. 1 is a diagram comparing the effects of the addition of an acid in the formulation of Example 1 using triethylhexanoin as the oil agent and hydrogenated polyisobutene as the hydrocarbon oil. It was colorless when malic acid, citric acid, succinic acid, phosphoric acid, and lactic acid were used, while it was red when EDTA.2Na, ascorbic acid, isononanoic acid, isopalmitic acid, linoleic acid and isostearic acid were used.

[0014] FIG. 2 is a diagram comparing the difference in the degree of transparency depending on the presence or absence of citric acid in Example 2. It was colorless in the presence of citric acid while it was red in the absence of citric acid.

[0015] FIG. 3 is a diagram comparing the difference in the degree of transparency depending on the presence or absence of the hydrocarbon oil in Example 3. It was cloudy in the absence of the hydrocarbon oil while it was transparent in the presence of the hydrocarbon oil. Moreover, it turned red after it is applied.

[0016] FIG. 4 is a diagram comparing the difference in the degree of transparency depending on the blending ratio of triethylhexanoin and hydrogenated polyisobutene in Example 4. It was almost colorless when the blending ratio of triethylhexanoin and hydrogenated polyisobutene was 95:0 to 30:65, while it was red when the ratio was 20:75 to 0:95.

[0017] FIG. 5 is a diagram comparing the gel strength and the transmittance in Example 5 in which the blending ratio of dibutyl lauroyl glutamide (GP-1) and dibutyl hexanoyl glutamide (EB-21) was changed. It was colorless when GP-1:EB-21 was 75:25 to 40:60, while it was blue when the ratio was 100:0, 25:75 and 0:100.

DETAILED DESCRIPTION OF THE INVENTION

[0018] Oil agents which can be used in the present invention include, but not limited to, triethylhexanoin, hexyl laurate, diethylhexyl succinate, isotridecyl isononanoate, neopentyl glycol diethylhexanoate, isobutyl isostearate, cetyl ethylhexanoate, ethylhexyl palmitate, isostearyl neopentanoate, neopentyl glycol dicaprate, neopentyl glycol diisononanoate, caprylic/capric triglyceride, triethylhexanoin, tricyclodecanemethyl isononanoate, trimethylolpropane triethylhexanoate, octyldodecanol, ethylhexyl hydroxystearate, isostearic acid, octyldodecyl stearoyloxystearate, diisopropyl dilinoleate, triisostearin, trimethylolpropane triisostearate, pentaerythrityl tetraisostearate, polyglyceryl-2 triisostearate, polyglyceryl-2 diisostearate, dipentaerythrityl hexaisononanoate, diisostearyl malate,

[0019] diisobutyl adipate, hexyldecyl ethylhexanoate, ethylhexyl isononanoate, isodecyl isononanoate, isotridecyl isononanoate, isopropyl myristate, isopropyl palmitate, isopropyl isostearate, dipentaerythrityl hexahydroxystearate/hexastearate/hexarosinate, hydrogenated castor oil isostearate, hydrogenated castor oil dimer dilinoleate, polyglyceryl-2 isostearate/dimer dilinoleate copolymer, polyglyceryl-2 diisostearate/dimer dilinoleate copolymer, phytosteryl/isostearyl/cetyl/stearyl/behenyl dimer dilinoleate, bis-phytosteryl/behenyl/isostearyl dimer dilinoleyl dimer dilinoleate, phytosteryl isostearyl dimer dilinoleate, dimer dilinoleyl hydrogenated rosinate, dimer dilinoleyl diisostearate, dimer dilinoleyl dimer dilinoleate, cholesteryl/behenyl/octyldodecyl lauroyl glutamate, phytosteryl/behenyl/octyldodecyl lauroyl glutamate, phytosteryl/decyltetradecyl myristoyl methyl alaninate, diglycerin/dilinoleic acid/hydroxystearic acid copolymer etc.;

[0020] Preferably, triethylhexanoin, hexyl laurate, diethylhexyl succinate, isotridecyl isononanoate, neopentyl glycol diethylhexanoate, isobutyl isostearate, cetyl ethylhexanoate, ethylhexyl palmitate, isostearyl neopentanoate, neopentyl glycol dicaprate, neopentyl glycol diisononanoate, caprylic/capric triglyceride, triethylhexanoin, tricyclodecanemethyl isononanoate, trimethylolpropane triethylhexanoate, octyldodecanol, ethylhexyl hydroxystearate, isostearic acid, octyldodecyl stearoyloxystearate, diisopropyl dilinoleate, triisostearin, trimethylolpropane triisostearate, pentaerythrityl tetraisostearate, polyglyceryl-2 triisostearate, polyglyceryl-2 diisostearate, dipentaerythrityl hexaisononanoate, diisostearyl malate can be used.

[0021] Dye which can be used in the present invention include, but not limited to, dyes with the following C.I. numbers: C.I.20170, C.I.20470, C.I.60725, C.I.60730, C.I.42090, C.I.73015, C.I.73000, C.I.42052, C.I.69825, C.I.42090, C.I.61520, C.I.74160, C.I.61570, C.I.61565, C.I.59040, C.I.42095, C.I.42053, C.I.10020, C.I.42085, C.I.45350, C.I.47005, C.I.47000, C.I.21090, C.I.19140, C.I.11680, C.I.18950, C.I.10316, C.I.11380, C.I.11390, C.I.13065, C.I.18820, C.I.15985, C.I.45370, C.I.12075, C.I.21110, C.I.15510, C.I.45425, C.I.11725, C.I.14600, C.I.12100, C.I.16255, C.I.45410, C.I.45440, C.I.45100, C.I.16185, C.I.15850, C.I.15585, C.I.15630, C.I.45170, C.I.15800, C.I.15880, C.I.12120, C.I.45380, C.I.26100, C.I.73360, C.I.17200, C.I.12085, C.I.45430, C.I.45190, C.I.12315, C.I.15865, C.I.26105, C.I.16155, C.I.16150, C.I.14700, C.I.12140, C.I.15620; preferably fluorescein type dyes with the following C. I. numbers: C.I.45350, C.I.45370, C.I.45425, C.I.45410, C.I.45440, C.I.45100, C.I.45170, C.I.45380, C.I.45430, C.I.45190; and most preferably a dye with C.I. number of C.I.45410.

[0022] The water soluble organic acid used together with the dye in the present invention is an acid having a pH of 3 or less in 0.1% aqueous solution, and is, but not limited to, for example, oxalic anhydride, oxalic acid, malic acid, citric acid, succinic acid, phosphoric acid, lactic acid, glycolic acid, tartaric acid, etc.; preferably malic acid, citric acid, succinic acid, phosphoric acid or lactic acid; more preferably malic acid, citric acid, succinic acid; particularly preferably citric acid or phosphoric acid.

[0023] Further, the blending amount of the water soluble organic acid is 0.0001% to 5.0%, preferably 0.001% to 0.1%.

[0024] In the present invention, a hydrocarbon oil is used to increase the degree of transparency. The hydrocarbon oil is not limited but hydrogenated polyisobutene can be used; and for example, depending on its degree of polymerization, PARLEAM 18 or PARLEAM 24 can be used, but it is not limited thereto.

[0025] The concentration of the amino acid based gelling agent is determined in view of gel strength, adhesiveness to the skin, feeling of use and the like, and its concentration is preferably 3 to 8%.

[0026] The blending ratio between the amino acid based gelling agents is determined in view of transmittance, and its bending ratio of GP-1:EB-21 is preferably in the range of 75:25 to 40:60%.

Example 1

[0027] The effects of the addition of various acids were compared in the following formulations using triethylhexanoin as the oil agent and hydrogenated polyisobutene as the hydrocarbon oil.

TABLE-US-00001 TABLE 1 Ingredient name Wt. % 1 Triethylhexanoin 49.95 2 Hydrogenated polyisobutene 40.0 3 Various acids 5.0 4 Dibutyl lauroyl glutamide 3.75 5 Dibutyl hexanoyl glutamide 1.25 6 Red 218 0.05
Results are shown in FIG. 1.

[0028] It became transparent when malic acid, citric acid, succinic acid, phosphoric acid or lactic acid was used. From the above results, it was found that it is transparent when the acid used is a water soluble acid having a pH of 3 or less in 0.1% aqueous solution.

Example 2

[0029] Lipsticks were manufactured, and the difference in the degree of transparency due to the presence or absence of citric acid when using the lot of the hydrocarbon oil not producing color and the lot of the hydrocarbon oil producing color was compared.

TABLE-US-00002 TABLE 2 Ingredient name Wt. % 1 Triethylhexanoin 59.95 2 Hydrogenated polyisobutene 30.00 3 Isostearic acid EX 6.00 4 Dibutyl lauroyl glutamide 3.00 5 Dibutyl hexanoyl glutamide 1.00 6 Red 218 0.05 7 Citric Acid 0.001
Results are shown in FIG. 2.

[0030] By using citric acid it was possible to produce transparent lipsticks. In addition, the obtained lipsticks were excellent in gloss and had a smooth feeling of use.

Example 3

[0031] A lipsticks were manufactured according to the following formulation comprising isostearic acid, and the degree of transparency thereof was compared with that of a lipstick not comprising a hydrocarbon oil or/and isostearic acid.

TABLE-US-00003 TABLE 3 Wt. % Without hydrocarbon oil and Without With Isostearic Isostearic Isostearic Ingredient name acid acid acid 1 Triethihexanoin 94.45 49.95 49.95 2 Hydrogenated polyisobutene 45.0 40.0 3 Isostearic acid 5.0 4 Dibutyl lauroyl glutamide 3.75 5 Dibutyl hexanoyl glutamide 1.25 6 Red 218 0.05
Results are shown in FIG. 3.

[0032] The lipstick became cloudy in the absence of hydrogenated isobutene which is hydrocarbon oil. Moreover, although preparation thereof was possible even if it did not contain isostearic acid, when it contained isostearic acid, it turned out that the solubility of dibutyl lauroyl glutamide and dibutyl hexanoyl glutamide increases and the degree of transparency increases.

Example 4

[0033] The difference in the degree of transparency depending on the blending ratio of oil agents (triethylhexanoin (TOG)) and isobutene was compared.

[0034] The results are shown in FIG. 4.

[0035] It was found that the transmittance was 50% or higher when the content of hydrogenated polyisobutene was 25 to 75% by weight.

Example 5

[0036] Changes in the gel strength and the transmittance due to differences in the blending ratio of dibutyl lauroyl glutamide (GP-1) and dibutyl hexanoyl glutamide (EB-21) were examined.

TABLE-US-00004 TABLE 4 The gel strength when gelling agents (GP-1:EB-21) = 75:25 Gel concentration Gel strength 3% Not solidified depending on the oil agent used 4% Almost Solidified 5% Almost Solidified 6% Solidified
Results are shown in FIG. 5.

[0037] It was confirmed that dibutyl lauroyl glutamide (GP-1) and dibutyl hexanoyl glutamide (EB-21) each gave extremely low transmittance when used alone, while when the blending ratio of dibutyl lauroyl glutamide:dibutyl hexanoyl glutamide is 75 to 40%:25 to 60%, high transmittance was obtained.