Jan 26, 2018 — Vitamin C, retinol, sunscreen ... some ingredients shouldn't be applied together. ... (Remember: Before using new products, you can and should consult a ... When the two active ingredients are used together, they can cause ...
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can-you-use-peptides-and-vitamin-c-together
Jul 18, 2017 — Both vitamin C and copper peptides promote collagen production. To prevent interaction between copper peptides and vitamin C, MayoClinic. 939c2ea5af
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