ghk-cu copper peptide hair growth clinical trial topical Amazon.com: Hair Serum with Copper Tripeptide-1 – Dual Peptide Scalp Treatment plus Licorice Root Extract : Beauty & Personal Care Hair Care 18+ Universal Hair Serum Dermatocosmetics Repair Firming For Hair Growth Unisex All Hair Types 30 ml Netherlands Hair Treatment Care and Treatment Products Netherlands Copper Peptides for Hair Growth:

Always trust the quality I love that the COA is always consistent every time I buy

Contraindicated for use in clients with liver and kidney insufficiency and those who are breastfeeding or pregnant

Do not shake it hard

So Im torn

If you and your doctor determine you need more of an individual vitamin or nutrient, supplementing is usually safe, provided you stick with the recommended amount and avoid very high doses, which could have negative health effects (that goes for anyone, not just people who are breastfeeding!)

Look for lot-specific, third-party HPLC purity (typically reported in the high-90s) and mass-spectrometry identity confirmation on the Certificate of Analysis for the exact lot received