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GHK-Cu is most commonly associated with skincare products, but copper peptides are increasingly being incorporated into scalp-focused formulations and modern haircare products

Due to its potency, hydroquinone is often prescribed for: Severe melasma Stubborn hyperpigmentation Post-inflammatory dark patches However, hydroquinone is prescription-only in many countries and restricted or banned in others because of safety concerns related to long-term or improper use

Clinical supervision that includes source verification is the single most important safety consideration in BPC-157 use

doi: 10.1038/nrn3680 54 HoubiecPLeoczykMStaszewskiFazarczykAJaworekAKRojas-PelcA