l-glutathione powder Glutathione - L-Glutathione-Reduced - Amino Acid L-glutathione Powder Supplement, 100 Grams

Ingredients Glutathione, Collagen Introducing our new Glutathione Skin Whitening with Collagen supplement, a powerful solution for a brighter, more youthful complexion

HYDRATING & FIRMING FORMULA Infused with nourishing peptides, the serum deeply hydrates while supporting collagen for skin that looks supple, smooth, and youthful.

The copper coordination chemistry of GHK-Cu enables controlled cellular copper delivery while preventing the formation of reactive oxygen species characteristic of free copper toxicity, with the peptide's binding affinity (log K = 16.1) positioning it perfectly within the physiological copper transport hierarchy to facilitate controlled metal transfer to enzymatic targets including lysyl oxidase (essential for collagen cross-linking) and superoxide dismutase (critical for antioxidant defense)

The primary difference is that the vials are only available in 2.5 mg and 5 mg doses, while the pens include those doses as well as 7.5 mg, 10 mg, 12.5 mg, and 15 mg. In clinical trials, patients on the 5 mg dose (maximum dose in single-dose vials) lost an average of 15% of their body weight in a year, while those on the 15 mg dose (maximum dose in single-dose pens) lost an average of 20% in a year