Peptides have gained widespread attention in recent years, particularly as they are featured in a variety of skin care products such as serums, moisturizers, and eye creams that claim to enhance skin's smoothness and firmness. Dr. Alison Dempsey, a dermatologist at NewYork-Presbyterian/Weill Cornell Medical Center, notes that interest in peptides is primarily linked to skin longevity trends, stating, "Topical peptides are safe, and they have proved to be effective. I am starting to incorporate them more into my patients’ skin care regimens."
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In speaking with Health Matters, Dr. Dempsey elaborated on the nature and function of peptides. She explained that peptides are small chains of amino acids produced naturally by the body, acting as messengers that prompt various cellular functions. There are numerous peptides that can positively impact skin by stimulating collagen production, improving elasticity, and firming the complexion.
Regarding regulation, Dr. Dempsey clarified that peptide-containing skin care products fall under cosmetic regulations rather than drugs and do not undergo FDA approval. However, injectable or orally consumed peptides are subject to FDA scrutiny. She advises caution for those considering peptide injections that lack FDA approval.
When asked about the safety and risks associated with topical peptides, Dr. Dempsey indicated they are generally safe, with minimal absorption into the body. The major risk involves potential skin irritation or rashes, depending on individual reactions to specific ingredients.
The surge in peptide popularity has been heavily influenced by social media and a growing interest in anti-aging solutions. While traditional retinoids have a well-established history for stimulating collagen, peptides are emerging as a complementary option. Dr. Dempsey mentioned that preliminary studies suggest peptides can improve skin elasticity and reduce wrinkles, although more research is needed for definitive conclusions.
Dr. Dempsey expressed some reservations about using peptides for treating conditions like eczema or acne, recommending them primarily for anti-aging purposes for individuals in their 30s and older. She encourages patients to consult with their dermatologists before integrating new products into their routines.
Dr. Dempsey identified four peptide types that are recognized in skin care, each serving distinct functions:
1. Signal peptides stimulate collagen production, aiding skin firmness.
2. Carrier peptides provide essential minerals, with evidence suggesting that copper peptides may reduce wrinkles.
3. Neurotransmitter-inhibiting peptides can help soften expression lines by interfering with muscle contractions.
4. Enzyme-inhibiting peptides slow down the enzymes that break down collagen and elastin, although they currently have limited research supporting their effectiveness.