Kao Corporation

Koji Yoshino

Yuji Suzuki

Akira Kawamata

Ken Takeuchi

Yasushi Shioya

Yukihiro Ohashi

Kazuyuki Yahagi

Hiroshi Kusuoku

Sachio Naito

Akira Yamamuro

Ichiro Tokimitsu

Yoshiya Sugai

Masahide Hoshino

Tadashi Hase

Mituo Suda

Kouji Morita

Youichi Arai

Atsuko Otsuka

Yoko Mastui

Keiko Taketomi

Junichi Sugita

Shinichi Meguro

An amide derivative represented by the following formula (1): ##STR1## wherein R.sup.1 represents a C.sub.1-40 hydrocarbon; R.sup.2 represents a C.sub.1-6 alkylene; R.sup.3 represents H, OH or alkoxyl; R.sup.4 represents a C.sub.1-39 hydrocarbon; R.sup.5 represents ##STR2## with the proviso that when R.sup.5 represents ##STR3## R.sup.3 does not represent OH; and a composition of the amide derivative for topical application to human skin. The composition improves the barrier function of the stratum corneum, providing improvement and prevention of dermatitis, skin roughness, or similar disorders.

Amide derivatives and their use in cosmetic composition

A hair cosmetic composition comprising a branched fatty acids of the following formula (1), ##STR1## wherein R.sup.1 is a methyl or ethyl group, n is an integer of 4-16, and R.sup.2 is an amino, alkoxy, or glycerol group. The composition imparts excellent sensation to hair and prevents hairs from being damaged.

Hair cosmetic composition

Novel siloxane derivatives represented by general formula (1): ##STR1## A method for producing the siloxane derivatives and agents such as cosmetic preparations, emulsifying dermatotherapeutic external agents and the like including at least one of the siloxane derivatives are also disclosed.

Siloxane derivatives, producing method thereof and agents including

An ester-modified silicone derivative of formula (I): ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and each represents a saturated or unsaturated straight- or branched-chain aliphatic hydrocarbon group having from 2 to 30 carbon atoms, a saturated or unsaturated alicyclic hydrocarbon group having from 3 to 30 carbon atoms or an aromatic hydrocarbon group having from 6 to 30 carbon atoms; l and m each represents a number of 0 to 100; n represents a number of 1 to 100; a represents a number of 3 to 16; and b represents a number of 1 to 3 is disclosed as well as a cosmetic composition containing the ester-modified silicone derivative.

Ester-modified silicone derivative and a cosmetic composition containing

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Utsunomiya, Japan

Koji Yoshino