Collagen (topical): effective % & pH 콜라겐
⏱ 1 min read
⚡ Quick answer: Collagen (topical): effective concentration commonly 0.1–2% of hydrolysed collagen, optimal pH 4.5–6.5, evidence Limited. Judge it as a humectant. If a product promises topical collagen will rebuild yours, that is the claim to distrust.
How much Collagen (topical) actually works? Here's the dosage, pH and evidence — the formulator-level read behind the % on a Korean label.
| Effective % | commonly 0.1–2% of hydrolysed collagen |
|---|---|
| Optimal pH | 4.5–6.5 |
| Evidence | Limited |
| Onset | immediate (feel) |
What the % on the label really means
Judge it as a humectant. If a product promises topical collagen will rebuild yours, that is the claim to distrust.
⚠️ Ceiling: Molecule size, not percentage, is the limiting factor — it stays on the surface either way.
Collagen (topical) guide →How Collagen (topical) 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.