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. An ultraviolet ray-absorbing composition containing the N-long-chain acyl neutral amino acid ester or/and an N-long-chain acyl acidic amino acid diester is provided, which also has excellent feel. An inorganic pigment composition containing the N-long-chain acyl neutral amino acid ester or/and the above-mentioned N-long-chain acyl acidic amino acid diester is also provided, which has excellent dispersion (stability) of the inorganic pigment, is less irritating to the skin, has excellent feel upon use and is not sticky.