Polysilicone-15: effective % & pH 폴리실리콘-15
⏱ 1 min read
⚡ Quick answer: Polysilicone-15: effective concentration up to about 10% where permitted, optimal pH typically 5.0–7.0 in the finished emulsion, evidence Moderate. Part of why Korean sunscreens feel light, and part of why the same formula cannot legally be sold in the United States.
How much Polysilicone-15 actually works? Here's the dosage, pH and evidence — the formulator-level read behind the % on a Korean label.
| Effective % | up to about 10% where permitted |
|---|---|
| Optimal pH | typically 5.0–7.0 in the finished emulsion |
| Evidence | Moderate |
| Onset | immediate (on application) |
What the % on the label really means
Part of why Korean sunscreens feel light, and part of why the same formula cannot legally be sold in the United States.
⚠️ Ceiling: It covers UVB only, so stacking more of it does nothing for the UVA side of the label.
Polysilicone-15 guide →How Polysilicone-15 works →
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✍️ Written & reviewed by the KoreaPlus Editorial team — dermatologist-informed, cosmetic-science researched & source-cited. Last reviewed: 2026-08-23.
General educational information using cosmetic structure-function wording — not medical advice. Always patch-test new actives. © KoreaPlus.