Birch Sap: effective % & pH 자작나무 수액
⏱ 1 min read
⚡ Quick answer: Birch Sap: effective concentration used as a water-phase substitute, often listed first, optimal pH 5.0–6.0, evidence Limited. A pleasant, light base with a good story. Judge the finished product, not the sap.
How much Birch Sap actually works? Here's the dosage, pH and evidence — the formulator-level read behind the % on a Korean label.
| Effective % | used as a water-phase substitute, often listed first |
|---|---|
| Optimal pH | 5.0–6.0 |
| Evidence | Limited |
| Onset | immediate (feel) |
What the % on the label really means
A pleasant, light base with a good story. Judge the finished product, not the sap.
⚠️ Ceiling: Being the first ingredient means it replaced the water, not that it is highly active.
Birch Sap guide →How Birch Sap works →
Related K-beauty guides
Try the free tools
🪞 Find your skin type🧴 Build a routine🧪 Decode any INCI list⚗️ What not to mix🔮 Glass Skin Score🩺 Troubleshoot skin🛡️ Where to buy authentic
Explore more K-beauty guides →
⏭ Up next⚗️ Bamboo Sap: effective % & pH 대나무 수액
✍️ 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.