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    1. GHK-Cu Copper peptide used in skin and hair cosmetics
    2. Microneedling Technique that makes tiny punctures in the scalp with fine needles
    3. Alfatradiol Weak form of estrogen applied to the scalp
    4. Stemoxydine Cosmetic ingredient made by L'Oréal
    5. Caffeine Stimulant used in hair shampoos and lotions