Oligopeptides and their use in cosmetics

A cosmetic composition comprising oligopeptides with the structure of formula (I)

• R1-[AA]n-R2 (I)
• wherein [AA] comprises at least 4 consecutive amino acids, which are identical compared to 4 consecutive amino acids of SEQ ID No. 1,
• wherein n is the total number of amino acids in the oligopeptide,
• wherein n=4,
• wherein R1 is linked to the amino-terminal part of [AA] and is selected from the group consisting of
• i. —H,
• ii. a linear saturated or unsaturated or branched saturated or unsaturated acyl group having 1 to 24 carbon atoms, which may be functionalised by a —OH, —SH, —COOH or —CONH2 group, or
• iii. a sterol or a sphingolipid group which is joined to the amino terminal part of [AA] via a bifunctional linker,
• wherein R2 is linked to the C═O group of the carboxy terminal part of [AA] and is selected from the group consisting of
• a) —OH,
• b) —NH2,
• c) a linear saturated or unsaturated or branched saturated or unsaturated alkoxy group having 1 to 24 carbon atoms, which may be functionalised by a —OH, —SH, —COOH or —CONH2 group, and
• d) a sterol or a sphingolipid group,
• with the proviso that if R1 is —H, R2 is not —OH;
• or that if R2 is —OH, R1 is not —H;
• and
• with the further proviso that if R1 is —H, R2 is selected from the group consisting of
• b) —NH2,
• c) a linear saturated or unsaturated or branched saturated or unsaturated alkoxy group having 2 to 24 carbon atoms, or
• d) a sterol or a sphingolipid group.