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Most dermatologists will recommend a first-time tretinoin prescription at (0.250.5%) and copper peptides can be used between (25%), Time of use: Tretinoin is best used at night because it's a photosensitive compound that can degrade with UV

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10.1038/s41598-023-31962-5 154 SoldatovV.VenediktovA.BelykhA.PiavchenkoG.NaimzadaM

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