ghk-cu promotes collagen (100 mg) Cosmetic Ingredients Blue Copper Peptides
Description
Tetrahexyldecyl Ascorbate is a more stable and gentler version of vitamin C

You should see your skin becoming brighter and more evenly toned due its vitamin C content

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Both have been proven to be effective by multiple studies.a You may ask W ill a DIY newbie be able to use these ingredients
For a quick summary, see this quote from one study : RESULTS: As one of the most powerful antioxidants in the skin, vitamin C has been shown to protect against photoaging, ultraviolet-induced immunosuppression, and photocarcinogenesis