While effective, it has a narrow therapeutic window, meaning small changes in blood levels can lead to serious side effects or reduced effectiveness
For instance, studies have observed a significant reduction of wrinkle volume, with some research indicating reductions of over 30% compared to other active compounds and over 50% compared to control serum
Kory, N
Liposomal Glutathione Yeast Extract (90% Glutathione) 42.86% [Yeast Extract (India), Lecithin, Citric Acid], Pullulan, Lemon Juice Powder (Lemon/USA), Vitamin C, Hyaluronic Acid, Pectin, Enzymatically Modified Stevia (Sweetener), Natural Flavor (Natural Lemon Lime Flavor), Glycerin, Polysorbate 80, Beta-Cyclodextrin, Other Processed Edible Oils and Fats (Malaysia), Modified Starch, Prolastin (Elastin), Anhydrous Citric Acid, Milk Thistle Extract Powder, Carotene, Low Molecular Weight Fish Collagen, Milk Ceramide, Vitamin E 50% Mixture (dl-alpha-Tocopheryl Acetate, Modified Starch, Glucose Syrup Powder, Silicon Dioxide), Biotin
(2022) 10:e13992
GHK-Cu works by rebuilding your skin's foundation from the inside out, which is a gradual process