| 摘要 |
PROBLEM TO BE SOLVED: To obtain a cosmetic which can be expected to have effects for preventing and treating xeroderma, psoriasis, chapped skin, etc., where the degradation of hyaluronic acid is physiologically exasperated than that in a normal state, by adding the extract of Boletopsis Leucomelas as a component or an active ingredient. SOLUTION: This cosmetic contains an extract of Boletopsis Leucomelas or a terphenyl derivative of the formula (R1 -R4 are each OH or acetyl). The extract is obtained, for example, by immersing the lyophilized and ground product of the fruit bodies of Boletopsis Leucomelas, a mushroom originated from the family Thelephoraceae, in 5-30 times weight of an extraction solvent (especially water, ethanol, methanol or the like) usually at a temp. of 15-50 deg.C for 24 hr to 1 week, and subsequently removing impurities by a filtration method, a centrifugal separation method, etc. |
