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Step 1. Wet Skin

Clinical Pharmacology & Therapeutics, 106 (1), 4355.

Why Topical Usually Wins for Skin and Hair# At 340 Da for free GHK (402.9 for the copper complex), the molecule is small enough to cross the stratum corneum when properly formulated in a hydrophilic vehicle a rare property among peptides

A sulforaphane analogue that potently activates the Nrf2-dependent detoxification pathway

What research peptides don't include: Quality verification (no mandatory testing) Sterility guarantees Accurate labeling verification Medical guidance Legal protection Research peptides are explicitly labeled "not for human consumption." They're produced without pharmaceutical-grade standards, and quality varies enormously between suppliers