A peptide of general formula R 1 -W n -X m -AA 1 -AA 2 -AA 3 -AA 4 -AA 5 -AA 6 -Y p -Z q -R 2 its stereoisomers, mixtures thereof and/or its cosmetic or pharmaceutical acceptable salts, characterized in that: AA 1 is selected from the group formed by -His- and -Ser- identified by the formula AA 2 is selected from the group formed by -Ile- and -Val-; AA 3 is selected from the group formed by -Tyr- identified by the formula and-Val-; AA 4 is -Val-; AA 5 is selected from the group formed by -Ala-, -Arg- and -Gly-; AA 6 is selected from the group formed by -Thr- and -Val-; W, X, Y and Z are amino acids and are independently selected from amongst themselves; n, m, p and q are independently selected from amongst themselves and have a value of 0 or 1; n+m+p+q is lower or equal to 2 R 1 is selected from the group formed by H, substituted or unsubstituted non-cyclic aliphatic group, substituted or unsubstituted alicyclyl, substituted or unsubstituted heterocyclyl, substituted or unsubstituted heteroarylalkyl, substituted or unsubstituted aryl, substituted or unsubstituted aralkyl and R 5 -CO-, wherein R 5 is selected from the group formed by H, substituted or unsubstituted non-cyclic aliphatic group, substituted or unsubstituted alicyclyl, substituted or unsubstituted aryl, substituted or unsubstituted aralkyl, substituted or unsubstituted heterocyclyl and substituted or unsubstituted heteroarylalkyl; R 2 is selected from the group formed by -NR 3 R 4, -OR 3 and -SR 3, wherein R 3 and R 4 are independently selected from the group formed by H, substituted or unsubstituted non-cyclic aliphatic group, substituted or unsubstituted alicyclyl, substituted or unsubstituted heterocyclyl, substituted or unsubstituted heteroarylalkyl, substituted or unsubstituted aryl, substituted or unsubstituted aralkyl; and with condition that R 1 and R 2 are not α-amino acids. AA 1 is selected from the group formed by -His- and -Ser- identified by the formula AA 2 is selected from the group formed by -Ile- and -Val-; AA 3 is selected from the group formed by -Tyr- identified by the formula and-Val-; AA 4 is -Val-; AA 5 is selected from the group formed by -Ala-, -Arg- and -Gly-; AA 6 is selected from the group formed by -Thr- and -Val-; W, X, Y and Z are amino acids and are independently selected from amongst themselves; n, m, p and q are independently selected from amongst themselves and have a value of 0 or 1; n+m+p+q is lower or equal to 2 R 1 is selected from the group formed by H, substituted or unsubstituted non-cyclic aliphatic group, substituted or unsubstituted alicyclyl, substituted or unsubstituted heterocyclyl, substituted or unsubstituted heteroarylalkyl, substituted or unsubstituted aryl, substituted or unsubstituted aralkyl and R 5 -CO-, wherein R 5 is selected from the group formed by H, substituted or unsubstituted non-cyclic aliphatic group, substituted or unsubstituted alicyclyl, substituted or unsubstituted aryl, substituted or unsubstituted aralkyl, substituted or unsubstituted heterocyclyl and substituted or unsubstituted heteroarylalkyl; R 2 is selected from the group formed by -NR 3 R 4, -OR 3 and -SR 3, wherein R 3 and R 4 are independently selected from the group formed by H, substituted or unsubstituted non-cyclic aliphatic group, substituted or unsubstituted alicyclyl, substituted or unsubstituted heterocyclyl, substituted or unsubstituted heteroarylalkyl, substituted or unsubstituted aryl, substituted or unsubstituted aralkyl; and