Cosmetic composition containing amino acid copolymers which is useful as a moisturizer
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United States of America Patent
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Apr 20, 1993
Grant Date -
N/A
app pub date -
Feb 12, 1991
filing date -
Feb 12, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to the cosmetic use of an amino acid copolymer of the statistical formula ##STR1## in which: a and b are each independently 1 or 2; A and B are similar or different and are an amino acid selected from: arginine, serine, proline, glycine, histidine, alanine, lysine, ornithine, citrulline, urocanic acid, asparagine or tyrosine; m, n, p and q are integers such that the ratio (n+q)/(m+p) is between 0.5 and 4; and z is an integer such that the average molecular weight is between 1000 and 100,000; and/or one of its salts. Application: cosmetic products.
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