Round Lab Birch vs. Isntree Sun Gel
A back-to-back Olive Young #1 winner with real vitamin C, though it contains fragrance, against a fragrance-free, lighter watery-gel texture with a shorter confirmed ingredient list.
Criteria | Round Lab Birch Juice Moisturizing Sunscreen SPF50+ PA++++ | Isntree Hyaluronic Acid Watery Sun Gel SPF50+ PA++++ |
|---|---|---|
| Price | $19.50 | $19.00 |
| Price / unit | $0.39/mL | $0.38/mL |
| Size | 50 mL | 50 mL |
| Price checked | 9/27/2026 | 9/12/2026 |
Both are chemical sunscreens at nearly the same price, but a real award record and a real fragrance difference separate them.
Why compare these two specifically
Near-identical price, but genuinely different credentials and fragrance status, worth weighing directly rather than assuming similar chemical-filter sunscreens are interchangeable.
Price per milliliter
Round Lab runs $0.39 per milliliter ($19.50 for 50mL). Isntree runs $0.38 per milliliter ($19.00 for 50mL). Nearly identical.
Real vitamin C vs. lighter watery texture
Round Lab confirms niacinamide, hyaluronic acid, real ascorbic acid, and adenosine, four named actives beyond the birch-sap base. Isntree's confirmed list centers on hyaluronic acid and centella asiatica, a lighter, more watery-focused formula.
A genuine, repeated award vs. fragrance-free status
Round Lab ranked #1 in Olive Young's Sun Care category in both 2024 and 2025, a real, repeated credential, but it contains fragrance. Isntree is confirmed fragrance-free, though it has no comparable award data on file.
Our take
If a genuine, repeated award record and a real vitamin C addition matter most, and fragrance isn't a concern, Round Lab's credentials are hard to match. If fragrance-free status and a lighter, more watery texture are the priority, Isntree is the safer pick, even without the same award pedigree.
Round Lab Birch Juice Moisturizing Sunscreen: $0.39/mL. Back-to-back Olive Young #1 with real vitamin C added, though it contains fragrance.
Isntree Hyaluronic Acid Watery Sun Gel: $0.38/mL. Fragrance-free with a lighter, watery-gel texture, no comparable award data.
Browse the rest of our sunscreen coverage.
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Price checked 9/27/2026
Price checked 9/12/2026
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Frequently asked
Is Round Lab Birch Sunscreen or Isntree Sun Gel fragrance-free?
Isntree is confirmed fragrance-free. Round Lab Birch Sunscreen contains fragrance.
Has Round Lab Birch Sunscreen won any awards?
Yes, ranked #1 in Olive Young's Sun Care category in both 2024 and 2025, a genuine, repeated credential. Isntree has no comparable award data on file.
Which is cheaper, Round Lab Birch or Isntree Sun Gel?
They're nearly identical: Round Lab runs $0.39 per milliliter, Isntree runs $0.38 per milliliter.