In a 12-week trial, GHK-Cu applied to thigh skin improved collagen production in 70% of treated women, compared to 50% for vitamin C cream and 40% for retinoic acid
However, if levels of homocysteine are high, it increases the risk for strokes, heart attacks, and dementia
That absence is exactly why baseline assessment and standardised follow-up are described as necessary rather than optional
Volume depends on target concentration
Of note, in animals, the amino acid selenomethionine can be nonspecifically incorporated into proteins in place of methionine (2)
Understanding NAC and Glutathione To understand why people combine these two, we first have to look at what they are and how they interact within the body