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Tighten may help replenish your skin with GHK Copper, stimulating collagen production and enhancing cellular renewal for visibly younger-looking skin

Anti-Inflammatory and Anti-Fibrotic Effects Chronic low-grade perifollicular inflammation the kind that slowly scars follicle tissue without causing obvious redness or symptoms is increasingly recognized as a driver of hair miniaturization

Aiming for 110 to 130g daily is preferable for anyone also resistance training

[ Google scholar ] Lamb J

So the antioxidant and preservative-boosting roles are the well supported ones while the calming benefit is plausible but thinly evidenced