ROUND LAB Birch Juice Ampoule
By Nur → Last verified 9/29/2026
Price checked 9/29/2026
List price $31.00. Price-checked 2026-09-29.
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What we found
Based on how this product compares to others in the serums category, cross-referenced against retailer listings and market data.
Strengths
- + Ten types of hyaluronic acid confirmed by the brand for layered hydration
Worth knowing
- - Birch extract concentration isn't stated on the current formula's retailer page -- an older 10,000ppm figure exists online but doesn't appear tied to this version
Key ingredients
These are the ingredients ROUND LAB highlights for this product, cross-checked against general dermatological and cosmetic-chemistry sources, not a full INCI list.
Fragrance: confirmed fragrance-free.
| Ingredient | What it is | What it does for skin |
|---|---|---|
| Birch sap | Sap tapped from birch trees, used in Korean skincare as a lightweight hydrating base. | Commonly included for its hydrating, soothing properties, though it has less independent clinical research than more established actives. |
| Sodium hyaluronate | The salt form of hyaluronic acid, commonly used for its water solubility and stability in formulas; molecular weight varies by product rather than being uniformly smaller. | Draws and holds moisture the same way hyaluronic acid does; how easily it absorbs depends on the specific molecular weight used, which formulas don't always disclose. |
| Hyaluronic acid | A humectant naturally found in skin, capable of holding many times its weight in water. | Draws moisture into the skin's surface, helping it look and feel plumper and more hydrated. |
| Beta-glucan | A polysaccharide often derived from oats or yeast. | A soothing, hydrating ingredient studied for calming sensitive skin and supporting the barrier. |
| Tocopherol | The chemical name for vitamin E as typically used in skincare formulas. | Helps neutralize free radicals from UV and pollution exposure and supports the skin's moisture barrier. |
| Ascorbic Acid | Pure vitamin C, the classic reference form and among the most extensively studied, though prone to oxidizing (degrading) once opened. | A strong antioxidant that helps brighten and even skin tone; actual potency depends heavily on concentration, pH, and formulation, which isn't always disclosed, so it isn't automatically stronger than a stable derivative at an adequate dose. |
What the brand says
ROUND LAB's own marketing claims, not our own findings.
- Enriched with birch juice extract and ten types of hyaluronic acid for instant moisture
- Delivers long-lasting rich hydration for 72 hours
Research-Based
Our assessment comes from pricing, ingredients, and published information, not personal use, the same standard we apply across the site. This product hasn't been hands-on tested yet. See our Methodology for what that distinction means.
Price history
Current price is the lowest we've recorded so far.
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Frequently asked
How much does ROUND LAB Birch Juice Ampoule cost per mL?
$0.44 per mL (currently $21.80 for 50 mL).
Has ROUND LAB Birch Juice Ampoule been hands-on tested?
Not yet. Our assessment for this product comes from pricing, ingredients, and published information, not personal use, the same standard we apply across the site. See our Methodology for what that distinction means.
What are the key ingredients in ROUND LAB Birch Juice Ampoule?
The ingredients ROUND LAB highlights for this product include Birch sap, Sodium hyaluronate, Hyaluronic acid, Beta-glucan, Tocopherol, Ascorbic Acid.
Sources
Pricing and availability for this product were verified against the following retailer listings.