Zinc PCA
Korean INCI: 징크피씨에이 · Also written as: 아연피씨에이
Supportive
What it is
Zinc PCA — scalp sebum control support
How it affects the score
Supports moisture, soothing or conditioning. +2 per distinct ingredient (up to 3).
How to read it on the label
It's a helper, not the hero. If a product headlines this ingredient, check what the actual actives are.
Ingredients are listed by descending concentration. Anything after the ~1% anchors (EDTA, hexanediol, preservatives) is effectively trace.
Check your own shampoo
Paste your full ingredient list to see this ingredient's position and the overall score.
Related ingredients
Rosemary Leaf Oil · Supportive
Rosemary Leaf Extract · Supportive
Arctium Lappa Root Extract · Supportive
Zinc Gluconate · Limited evidence
※ For reference only, based on public ingredient data — not medical advice.