Supplements
This product scores Average due to promising but limited scientific backing for effectiveness in shampoo form. GHK-Cu peptides demonstrate follicle stimulation in studies like the in vitro tripeptide-copper research (effective concentrations ~0.1-1% topical), yet rinse-off shampoos likely deliver sub-therapeutic doses with poor retention. Keratin peptides aid surface repair but lack penetration evidence. Safety is excellent with no FDA issues or common adverse events beyond rare allergies. Quali
Peptide Shampoo offers mild benefits for hair strength and scalp health from ingredients like GHK-Cu, but lacks robust clinical proof in rinse-off form. Suitable for general maintenance, not as a primary hair loss treatment. Opt for serums or tested brands for better results.