Skin, hair and connective tissue
Brittle nails
Nails can split from repeated wetting, chemicals, trauma, skin disease or nutritional problems. Fungal disease and nail psoriasis need different treatment.
Potential benefits explored
Stronger nails with less splitting.
GHK-Cu is included as a broad tissue-support hypothesis. Nail-specific benefit is particularly speculative, so nutrition, exposure and the cause of brittleness deserve attention.
Practical interpretation
Reduce repeated trauma and wet-dry exposure; investigate persistent changes or suspected deficiency.
Meaningful outcomes: Breakage, nail quality and new growth.
Compare the compounds studied for Brittle nails
Members see the full evidence picture for this condition: every compound studied, graded per condition from strong human evidence through to preclinical-only and negative findings, with human and animal results, risks, combination evidence and cited sources — plus how each compound maps to the research materials we list, with live pricing and stock.
Research reference for laboratory materials only. Not medical advice and not a recommendation for human use. Research cut-off: 30 September 2026.