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Skin and Anti Aging Peptides

6 articles

Skin and anti-aging peptides appear in creams, serums, supplements and, more and more, in vials sold for injection. The evidence differs by route: copper peptide creams have a long cosmetic safety record, while injected GHK-Cu has almost no human data. Collagen supplement trials report small effects, and trials without company funding found less. Melanotan 1 is covered here because its approved form, afamelanotide, treats a rare light sensitivity disorder. Begin with what science says about collagen peptides and skin and how peptide serums are marketed, then read GHK-Cu side effects by route.

Start here

  1. Collagen Peptides: What Science Actually Says About Skin3 min
  2. Skincare Peptides: Serum Science vs Marketing2 min
  3. GHK Cu Peptide Side Effects From Creams to Injections6 min

All Skin and Anti-Aging guides

Illustration for Skincare Peptides: Serum Science vs Marketing
Skin and Anti-Aging2 min read

Skincare Peptides: Serum Science vs Marketing

Matrixyl, copper peptides, "botox in a bottle". What cosmetic peptides can plausibly do, and where the claims get ahead of reality.

October 22, 2026

Illustration for Collagen Peptides: What Science Actually Says About Skin
Skin and Anti-Aging3 min read

Collagen Peptides: What Science Actually Says About Skin

Hydrolyzed collagen is one of the best-selling supplements in the world. A look at what studies show and what is marketing.

October 22, 2026

Illustration for GHK Cu Peptide Injection Before and After Results Explained by Research
Skin and Anti-Aging6 min read

GHK Cu Peptide Injection Before and After Results Explained by Research

Copper peptide photos are everywhere. What topical skin trials, hair research and the missing injection data actually show about GHK-Cu.

October 22, 2026

Illustration for Melanotan 1 MT1 Guide to Trial Results and Label Dosage
Skin and Anti-Aging6 min read

Melanotan 1 MT1 Guide to Trial Results and Label Dosage

MT1 is afamelanotide, approved as the Scenesse implant for erythropoietic protoporphyria. Learn its label dose, trial results, skin safety and how it differs from melanotan II.

October 22, 2026

Illustration for GHK Cu Dosage and the Question of How Often to Inject
Skin and Anti-Aging6 min read

GHK Cu Dosage and the Question of How Often to Inject

Cosmetic, cell and animal research use very different GHK-Cu amounts, and none of them adds up to an established human injection dose or schedule.

October 22, 2026

Illustration for GHK Cu Peptide Side Effects From Creams to Injections
Skin and Anti-Aging6 min read

GHK Cu Peptide Side Effects From Creams to Injections

Topical copper peptides have a reassuring cosmetic safety record, while injected GHK-Cu carries unstudied risks such as infection, immune reactions and copper overload.

October 22, 2026