Peptides appear both in cosmetic formulations and in laboratory research. Cosmetic peptides go into topical products; research peptides such as GHK-Cu are supplied for work in preclinical models. The two differ in purpose, formulation and the regulations that apply to them.
Cosmetic peptides
Cosmetic peptides are short chains of amino acids incorporated into topical products. They act as biological messengers and are included for their reported effect on collagen and elastin production. Examples of cosmetic peptides include Acetyl Hexapeptide-8 and Palmitoyl Pentapeptide-4, which are used in cellular longevity creams and serums.
Applications of cosmetic peptides
- Reduction of wrinkles and fine lines.
- Increase in skin firmness and elasticity.
- Improvement of skin hydration.
Research peptides
On the other hand, research peptides, such as GHK-Cu (Glycyl-Histidyl-Lysyl-Copper), are used exclusively in research settings to understand their biological effects on skin aging and regeneration. GHK-Cu has been shown to possess antioxidant properties and may promote wound healing in preclinical models.
Properties of GHK-Cu
- Stimulation of collagen synthesis.
- Improvement of wound healing in preclinical models.
- Reduction of inflammation.
Differences between the two
Cosmetic and research peptides differ on three points:
- Purpose: Cosmetic peptides are designed for applications in beauty and personal care products, while research peptides are used for scientific and experimental studies.
- Formulation: Cosmetic peptides are generally presented in topical formulations, whereas research peptides may be administered in various forms, including injections.
- Regulation: Products containing cosmetic peptides are subject to cosmetic industry regulations, while research peptides are not intended for use outside research and are for research purposes only.