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Here's why that combination is interesting: rapamycin inhibits mTOR, the cellular growth pathway that, when chronically overactivated, drives cellular senescence in follicle stem cell niches

Our protocol adjustments for Fitzpatrick IV-V patients using the GHK-Cu stack include more conservative SkinPen depth settings, lower needle density on the first session, an extended recovery window between sessions compared to lighter skin types, consistent mineral sunscreen guidance beginning two weeks before the first session, and careful timing to avoid treating recently tanned skin

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Start with 0.5-1mg daily if injecting, or a 1-2% topical product applied once daily

Many are from self-experimentation with research chemicals