ghk-cu nasal spray dosage Neurogan Copper Peptide Hair & Scalp Serum – 2400mg, 4% Copper Peptides – Fast-Absorbing, Water-Based Formula for Hair Softness & Shine ghk cu dosage per day

For hair growth specifically, combining topical GHK-Cu with microneedling is supported by the strongest evidence as shown in the 2025 Kuceki study which achieved 26.5% regrowth with this combination approach

The peptide's biological activity in research models depends on its 1:1 chelation of a copper(II) ion

Pflgers Archiv European Journal of Physiology

According to the product page, the active formulation includes: Tretinoin 0.027% GHKCu (Copper Tripeptide1) 1% (a peptide that helps stimulate skin repair and regeneration) NAD (Nicotinamide Adenine Dinucleotide) 0.5% (a molecule involved in cell energy and repair) Spilanthol (Acmella oleracea Extract) 1% (a plant extract known for its mild muscle-relaxing effects on skin) Niacinamide 5% (a form of vitamin B3 that supports the skin barrier and improves skin tone) Magnesium Ascorbyl Phosphate (a stable form of vitamin C) 3% Hyaluronic Acid 1% (low- & mediummolecular weight) PhytoCellTec Exosomes 0.4% (plant stemcell derived extracellular vesicles) Delivered via EllievaTec absorption technology

However, start with one or the other to understand individual effects before adding complexity