how many units of glutathione should i inject IM Glutathione Injection For Skin Whitening:

Ludovico, P., Sousa, M

2021;13:e1695

A copper peptide cream would work well as part of the "sandwich method." Tretinoin is known to be extremely drying to the skin because it promotes fast cell turnover, so sandwiching a copper peptide cream can help you lock in moisture

Pre-Blend Dose Assessment (10 units / 0.10 mL daily) Component GHK-Cu Per-dose from Blend ~1.67 mg Typical Standalone 1-2 mg daily Assessment In range Component BPC-157 Per-dose from Blend ~0.33 mg Typical Standalone 0.25-0.5 mg daily Assessment In range Component TB-500 Per-dose from Blend ~0.33 mg Typical Standalone 2-5 mg per injection, 2x/week Assessment Below standalone injury range The 5:1:1 blend is convenience- and skin-focused