What would peptides actually do?

Peptides are short strings of amino acids, the building blocks of proteins. Some cosmetic peptides are designed to support collagen and elastin, proteins involved in skin strength and flexibility. Others have different roles, so "peptides" names a group of ingredients, not one treatment with one predictable effect. The word on the front of the bottle is doing considerably less work than the formula inside.34

Topical peptides can help improve signs of photoaging, meaning skin damage caused by ultraviolet radiation. Research on aging skin includes improvements in hydration and some wrinkle measures, while effects on elasticity are inconsistent. Benefits from swallowed peptide supplements are separate from benefits from a cream; a serum does not inherit a supplement's results.56

Some specific peptide formulas have improved fine lines and wrinkles over weeks to months. Those are results for particular formulas and concerns, not a timetable for improving healthy teenage skin. Peptides are not an overnight route to "glass skin," and many online examples of that look depend on makeup, filters and editing.14

Do I need to start early to prevent wrinkles?

Starting skincare early makes sense when the routine fits your skin's needs. Starting wrinkle products early is a different decision. At 15, put that effort into sun protection rather than adding a peptide serum for future wrinkles. Sunscreen is the priority for young skin, even if a basic routine gives the shopping basket very little character development.1

A peptide serum and a moisturizer containing peptides should not be judged by the highlighted ingredient alone. The rest of the formula matters, including any exfoliants or other active ingredients. Cosmetic peptides have a long history of use, but safety depends on the particular peptide and product. "Contains peptides" is neither a reason to buy a product nor enough information to decide whether it suits you.34

What should I use instead?

  1. 1Wash with a gentle facial cleanser once or twice daily. If your skin is dry or sensitive, washing once in the evening can be enough. Avoid harsh scrubs.
  2. 2Apply a gentle, fragrance free moisturizer to relieve dryness. A lightweight moisturizer is a sensible starting choice for teens.
  3. 3Every morning, use a broad spectrum, water resistant sunscreen with SPF 30 or higher.
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What if I already bought a peptide product?

Before adding the product, identify the concern you want to address: dryness, breakouts or simply wanting to try skincare. For dryness, a basic moisturizer is the more direct starting point. If you introduce any new product, introduce only one at a time. For sensitive skin, test a small amount on a limited area before applying it across your face.12

Stop using a new product if it causes redness, burning, peeling or an itchy rash. An itchy, red, scaly reaction can be contact dermatitis, an inflammatory reaction to something touching the skin. See a dermatologist if your skin reacts to skincare products, especially if you have sensitive skin.12

What if I want peptides for acne?

Teenage acne calls for acne care rather than wrinkle care. Benzoyl peroxide and salicylic acid are ingredients used for acne, though both can cause dryness and irritation. A dermatologist can help choose an appropriate treatment. Get medical advice if breakouts leave dark marks or scars, or have not improved after a few months of treatment bought without a prescription.2

Where this answer comes from

  1. 1Kids into skincare may be at risk from influencers promoting inappropriate productsuclahealth.org
  2. 2A dermatologist’s guide to skincare from growing up to glowing upaad.org
  3. 3Peptides for Skin Carehealth.clevelandclinic.org
  4. 4A framework for the safety evaluation of peptides in cosmeticspmc.ncbi.nlm.nih.gov
  5. 5Cosmeceuticals in photoaging: A reviewpubmed.ncbi.nlm.nih.gov
  6. 6Oral and topical peptides for skin aging: systematic review and meta-analysis of randomized controlled trialspmc.ncbi.nlm.nih.gov