| 摘要 |
<p>An N-long-chain acyl neutral amino acid ester containing a straight-chain or branched-chain, saturated or unsaturated acyl group having from 6 to 22 carbon atoms, where the hydrocarbon group of the alcohol constituting the ester is a straight-chain or branched-chain, saturated or unsaturated hydrocarbon group having from 1 to 10 carbon atoms disclosed herein is an oily material suitable for cosmetic compositions, which provide an excellent feeling upon use and also an excellent hair conditioning effect to a cosmetic composition containing the same. Further, an ultraviolet ray-absorbing composition characterized by containing, as active ingredients, an ultraviolet ray absorbent, and the above-mentioned N-long-chain acyl neutral amino acid ester or/and an N-long-chain acyl acidic amino acid diester containing a straight-chain or branched-chain, saturated or unsaturated acyl group having from 6 to 22 carbon atoms, where the hydrocarbon group of the alcohol constituting the ester is a straight-chain or branched-chain, saturated or unsaturated hydrocarbon group having from 1 to 10 carbon atoms is an ultraviolet ray-absorbing composition which stabilizes the sparingly-soluble ultraviolet ray absorbent contained therein, and which is also excellent in feeling. Still further, an inorganic pigment composition characterized by containing, as active ingredients, an inorganic pigment and the above-mentioned N-long-chain acyl neutral amino acid ester or/and the above-mentioned N-long-chain acyl acidic amino acid diester is an inorganic pigment composition which is excellent in the dispersion (stability) of the inorganic pigment, which is less irritative to the skin, and which is also excellent in a feeling upon use because of lack of stickiness or the like.</p> |
