Zinc PCA / Zinc Oxide / Sebum Regulator
Topical zinc PCA regulates sebum via 5-alpha reductase inhibition, kills C. acnes, reduces inflammation, and accelerates wound healing. Zinc oxide in SPF provides broad-spectrum UV protection. Orally, zinc deficiency is linked to acne severity — supplementation at 25–45mg/day shows clinical efficacy comparable to some antibiotics in studies.
Topical zinc PCA 0.5–2% serum; zinc oxide in mineral SPF. Oral: 8–11mg RDA; 25–45mg therapeutically for acne (with food).
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