Article
Skin and hair: the preparation matters
How to evaluate peptide wellness claims · introductory evidence-reading guide, not a treatment guide.
Bibliographic identity and abstract checked October 15, 2026 by AI-assisted editorial source check. No human reviewer assigned. Full-text critical appraisal, citation verification and scientific review pending.
Educational information for healthcare professionals and the general public. Not individual medical advice, diagnosis, treatment, or a recommendation to use a compound.
A peptide name can appear on a cosmetic, in a wound-care study, and in a discussion of injections. The shared name does not make these the same intervention.
Keep a study in its original setting
A 1994 study evaluated a specific topical glycyl-L-histidyl-L-lysine:copper complex formulation (lamin Gel) for diabetic neuropathic ulcers alongside standardized wound care. This formulation is not interchangeable with every GHK-Cu product. Its findings should not be rewritten as evidence that injections rejuvenate healthy skin or grow hair. Those are different questions. Topical glycyl-L-histidyl-L-lysine copper in diabetic ulcers
Examine appearance claims carefully
Ask which formulation was tested and whether outcomes concerned appearance, ulcer healing or another endpoint. For photographs, consider consistent lighting, positioning, timing and other care. A persuasive image alone does not identify the cause of a change.
Distinguish cosmetic appearance claims, disease-related research and personal reports. Follow a study-specific statement to its original source and check the formulation, route, population and outcome before transferring a conclusion to another product. For related reading, examine the GHK-Cu profile and the article on wound-healing biology; neither substitutes for assessing this exact formulation.
Related reading
References
Bibliographic sources shown for transparency. Citation verification pending; no citation is marked verified.
- Mulder GD, Patt LM, Sanders L, et al. Enhanced healing of ulcers in patients with diabetes by topical treatment with glycyl-l-histidyl-l-lysine copper. Wound Repair Regen. 1994;2(4):259–269. DOI: 10.1046/j.1524-475X.1994.20406.x. PMID: 17147644. Primary research: topical gel in diabetic neuropathic ulcers; not injectable cosmetic or hair-growth evidence.DOI 10.1046/j.1524-475X.1994.20406.x · PMID 17147644
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