Zachara et al., 2006
The reduction of DTNB by non-oxidized thiols forms a yellow derivative (5-thio-2-nitrobenzoate), which was measured at 412 nm, providing the total thiol content in the sample
Vitamin C serum discontinuation provides another relevant comparison since L-ascorbic acid represents popular antioxidant treatment with collagen synthesis stimulation and skin brightening effects partially overlapping GHK-Cu benefits
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This trial was conducted with 80 healthy women aged 3060 years, where the collagen supplement ( n = 40) and the placebo group ( n = 40) were evaluated for skin wrinkling (Visioface), elasticity (cutometry), and hydration (corneometry) at baseline and at 6 weeks
Learn more: Read our full guide on CJC-1295/Ipamorelin #3 Selank The Anxiety-Quieting Peptide for Sleep Onset What it does: Selank is a synthetic peptide derived from the naturally occurring immunomodulatory peptide tuftsin