If you're using GHK Cu and it stings a little (which is common) this one's for you In this reel I'm sharing the small tweaks that have helped me make peptide injections GHK CU The Rejuvenate & Wellness Center ACIDS: What are not recommend and what is recommend to use during pregnancy. Retinoids (including retinol, retinyl palmitate, and tretinoin): These are powerful derivatives of vitamin A that are commonly used in Amazon.com: Skin Perfection Copper Peptide Serum GHK CU 1% for Face & Hair Copper Peptides for Skin, Hair, & Scalp 1% Blue Liquid for Face, Neck, Body, Scalp Multi Use Serum Booster with Ghk cu and skin peptides (topical) Skin regeneration and wrinkle reduction Longevity Protocols Unlocking the Secrets of GHK Cu: The Revolutionary Peptide for Youthfu