| 摘要 |
PROBLEM TO BE SOLVED: To obtain a cosmetic excellent in adhesion to the skin, feeling of use such as slippery feeling and adsorbability for sweat, sebum or the like by including a powder obtained through subjecting shellfish shell to firing and crushing treatments. SOLUTION: This cosmetic is obtained by including a powder obtained through subjecting shellfish shell to firing and crushing treatments. As for the shellfish, any shellfish such as univalve, bivalve, and spiral one, for instance, short-necked clam, corbicula, hard clam oyster, turban shell, Spisura sachalinensis, scallop, and constricted tagelus, can be used. The firing temperature is preferably 200-1,000 deg.C, more preferably 500-800 deg.C. The firing time is preferably 1-7 day. The crushing treatment is to be continued until the mean particle diameter of the final powder becomes preferably about 0.1-100 mμ, more preferably 1-50 mμ. It is preferable that the firing treatment is done first followed by the crushing treatment. The content of the power in the cosmetic is preferably 0.1-50 wt.%, more preferably 1-40 wt.%.
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