Abstract: The present invention relates to a peptide having the activity of insulin like growth factor-1 (IGF-1) and derived from IGF-1, a composition for improving skin conditions or treating a periodontal disease comprising the peptide. The IGF-1 mimicking peptides of this invention have identical functions or actions to natural-occurring IGF-1 and much better stability and skin permeation than natural-occurring IGF-1. In these connections, the composition comprising the peptides of this invention can exhibit excellent efficacies on the treatment, prevention and improvement of diseases or conditions demanding IGF-1 activities. In addition, the peptides of this invention can be advantageously applied to pharmaceutical compositions, quasi-drugs and cosmetics.

Abstract: The present invention relates to a composition for improving a skin condition or treating a periodontal disease, which comprises as an active ingredient a basic fibroblast growth factor-derived peptide. The peptides of this invention exhibit superior efficacies and much better stability and skin permeation than natural-occurring bFGF. In these connections, the composition comprising the peptides of this invention can exhibit excellent efficacies on improvement in skin conditions and treatment of periodontal diseases. In addition, the peptides of this invention can be advantageously applied to pharmaceutical compositions, cosmetics, tooth-paste and compositions for mouth cleaning and caring.

Abstract: The present invention relates to a peptide comprising a specific amino acid sequence possessing human thymosin ?-4 (T?4) activities and its uses. The peptide of this invention has identical or similar functions or actions to human T?4 and its biological activity is almost identical to natural-occurring T?4. In addition, the peptide of this invention exhibits much higher stability and skin permeation than natural-occurring T?4. In these connections, the composition comprising the peptides of this invention can exhibit excellent efficacies on improvement in thymosin ?-4-effective disorders or conditions. In addition, the peptide of this invention can be advantageously applied to drugs, cosmetics, toothpaste and compositions for mouth cleaning and caring, most preferably, cosmetics. Specifically, the peptide of this invention is advantageously applied to cosmetics for promoting hair growth.