Poor quality peptide from an unreliable sourcealways request third-party testing certificates (COAs) and check for the characteristic faint blue color Improper storage degraded the peptideif the solution has turned dark blue, green, or cloudy, it's likely degraded Dose too low for your goalsif you've been at starting dose for 4+ weeks with zero changes, consider moving to standard dose Not supporting the processGHK-Cu signals collagen production, but your body needs vitamin C, protein, and good nutrition to actually build it Unrealistic expectationsGHK-Cu improves skin quality and healing, but it won't replicate a facelift or completely erase deep wrinkles Key Research [1]"The human tri-peptide GHK and tissue remodeling" Pickart L, 2008 Finding: This comprehensive review showed GHK-Cu activates a wide range of tissue repair processesattracting repair cells, boosting collagen and elastin, increasing blood vessel growth factors (VEGF), and stimulating hair follicle enlargement

For the millions of people in the UK living with conditions like Hashimotos thyroiditis or hypothyroidism, these medicationsoriginally developed for type 2 diabetescan be a significant tool for managing metabolic health
For women, 1,000-3,000 mg/day supports egg quality and mitochondrial energy production in maturing oocytes, which is particularly relevant for women over 35 experiencing age-related fertility decline
De Barra C, Khalil M, Mat A, ODonnell C, Shaamile F, Brennan K, et al
doi:10.1186/1472-6904-12-8 149
Yes, this is a very common experience