GHK Cu Copper Peptide Skin & Healing Beverly Hills GHK Cu Peptides: Unlocking the Copper Peptide Revolution in Skin Care GHK CU, Why this audio? Because injecting feels like a constant wasp sting so it takes me about 15 seconds to pin .2 mL. I dread this shot every night for that reason. Also, it leaves me bruised, so I Bounce Back Better with Peptides for Injury Recovery If youre using GHK Cu and it stings a little (which is common) this ones for you , In this reel Im sharing the small tweaks that have helped me make peptide injections way more comfortable Wellness peptide craze: why people are injecting drugs 'not for human consumption'