topical peptides

Topical Peptides: What They Are & What the Research Shows

Topical peptides are short amino-acid chains applied to skin or scalp to signal collagen synthesis, repair, and pigmentation pathways. A research-grounded guide to how they work, the evidence, and where they fall short.

GHK-Cu Topical Peptide: Mechanism, Evidence & Use

GHK-Cu is a 340 Da copper-binding tripeptide and the most-studied topical peptide for skin. A research guide to its mechanism, the human evidence, and topical serum vs cream formulation.

Topical vs Injectable Peptides (GHK-Cu)

Topical peptides act locally on skin; injectable peptides enter systemic circulation. A research comparison of GHK-Cu peptide injection vs topical — absorption, bioavailability, and use-case.

Do Topical Peptides Actually Work? The Evidence

Topical peptides work for some skin endpoints and not others. A research-grounded look at the evidence, what absorbs, copper peptides, side effects, and pregnancy questions.

Topical Peptides for Wrinkles & Anti-Aging

Topical peptides reduce wrinkles by signalling collagen synthesis and softening expression-line contraction. A research guide to GHK-Cu, signal and neuro-peptides, and peptides vs retinol.

Topical Peptides for Hair Growth

Topical peptides are studied for hair growth via follicular signalling — copper peptides inhibit 5-alpha-reductase and prolong anagen. A research guide to GHK-Cu, scalp delivery, and the evidence.

Best Topical Peptides (2026 Research Round-Up)

The best topical peptides by evidence: GHK-Cu for collagen and skin, palmitoyl pentapeptide-4 for firmness, SNAP-8 for expression lines, KPV for barrier. A research-ranked round-up.