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Target 40-60 ng/mL for optimal results
GHK-Cu: collagen and structure GHK-Cu is a copper-binding tripeptide associated with regulation across more than 4,000 genes, including collagen synthesis, antioxidant defense, wound healing, inflammation, and tissue breakdown. Circulating levels decline with age, from roughly 200 ng/mL at age 20 to about 80 ng/mL by 60. It clears damaged matrix while helping new collagen form and cross-link into stronger structure (matrix remodeling and lysyl oxidase activation). BPC-157: blood supply BPC-157 is a 15-amino-acid fragment from gastric juice
Besides, it has a very thin consistency, and you can use it as a toner before any other treatment, to reinforce the skin regime
Wintergerst, Taixing Cui, Honglei Ji, Yi Tan, and Lu Cai
It can also help attract moisture to the upper layer of the skin One of the best moisturizing ingredients
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