Peptides Play Key Role in Skin Care, Dermatologist Explains

Dr. Billie Cassé discusses the benefits and limitations of peptide-based skin care products and treatments.

Published on Feb. 25, 2026

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Dr. Billie Cassé, a dermatologist from Reno Tahoe Dermatology, appeared on Morning Break to discuss the role of peptides in skin care products. Peptides are short chain amino acids that can signal the production of collagen and elastin, or act as neurotransmitters to relax facial muscles. While injectable peptide treatments offer higher potency and faster results, topical peptide products in serums and moisturizers can also provide benefits over time, especially when combined with other ingredients like niacinamide or vitamin C.

Why it matters

As people age, maintaining skin elasticity and collagen production becomes increasingly important. Peptide-based treatments, both topical and injectable, provide an option for addressing these skin care concerns, though the two approaches have different strengths and limitations.

The details

Peptides are messengers that can either signal the production of collagen and elastin, or act as neurotransmitters to relax facial muscles. Injectable peptide treatments offer higher potency and faster results in boosting collagen synthesis and healing time after procedures, but they can be more expensive. Topical peptide products in serums and moisturizers work gradually to improve skin over time, but have limitations in how deeply they can penetrate the skin's surface. Dermatologists emphasize the importance of choosing trusted providers for peptide injections, as the treatments should be tailored to each individual's goals, skin type, and overall health.

  • Dr. Billie Cassé appeared on Morning Break on February 19, 2026.

The players

Dr. Billie Cassé

A dermatologist from Reno Tahoe Dermatology who appeared as a monthly contributor on Morning Break to discuss skin care topics.

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What they’re saying

“Peptides are messengers. They are short chain amino acids that have roles, they either signal and instruct production of collagen and elastin. They are carriers of trace minerals that are needed for collagen and elastin or they are Neurotransmitter peptides which can relax facial muscle similar to Botox.”

— Dr. Billie Cassé, Dermatologist (Morning Break)

The takeaway

Peptide-based skin care products and treatments, both topical and injectable, offer a way for people to address skin elasticity and collagen production as they age. While injectable peptides provide more immediate and potent results, topical peptide products can also be beneficial when used consistently and combined with other key ingredients.