Kao Corporation

Kouichi Niinaka

Akira Kawamata

Genji Imokawa

Hidenori Yorozu

Masakazu Yamaguchi

Tetsuro Kamiya

Yukihiro Ohashi

Masaki Iwasaki

Michitaka Sawada

Masanori Tanahashi

Takahide Minami

Shinya Amano

Shinichi Masuda

Shinji Yamada

Hiroko Joukura

Katsuhiko Takeuchi

Keiko Morioka

Disclosed herein is an external skin-care composition comprising hydroxycarboxylic acids or derivatives thereof represented by the general formulae (1), (2), and (3), or the salts thereof: ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3 are each independently a hydroxyl group, an amino group or an alkoxyl group which may be substituted by 1-3 hydroxyl groups, l is a number of 7-11, m is a number of 6-10, and n is a number of 5-9. This composition exhibits an excellent moisturizing effect, moisturizes the skin, has a great effect in preventing skin roughness and shows excellent effects in enhancing the clear skin tone of the skin and reducing skin dullness, and is hence particularly useful for cosmetic skin-care compositions.

External skin-care composition

A bathing preparation is disclosed, comprising bathing agent components packed in a bag which is made of; a nonwoven or woven fabric consisting of a water soluble polymer fiber or a laminate sheet comprising a nonwoven or woven fabric consisting of a water soluble polymer fiber on the outside and a water soluble film on the inside.

Bathing preparation

A patch is disclosed, which comprises a water-soluble adhesive sheet (a), and a patch is disclosed, which comprises a water-soluble adhesive sheet (a) and a water-soluble protective material (b) laminated thereon. This patch is convenient in handling and achieves high merit. Also, it can be applied to the skin so as to exhibit excellent warm-bathing effects on the application site.

Patch

A 4,4-Dimethyl-1-phenylpentane-1,3-dione derivatives represented by the following formula (1): ##STR1## wherein all symbols are defined in the disclosure, is disclosed. An ultraviolet ray absorbent and a cosmetic comprising the derivative are also disclosed. The derivative of the present invention have excellent ultraviolet ray absorbing performance and superior light stability, and the ultraviolet ray absorbent and cosmetic comprising the derivative have excellent effect to prevent sunburn.

4,4-dimethyl-1-phenylpentane-1,3-dione derivative and UV ray absorbent

A novel aroyl ketone derivative represented by formula (I) is disclosed.

Aroyl ketone derivative, UV ray absorber comprising the same, and

Growing community of inventors

Tochigi, Japan

Kouichi Niinaka