AESTURA Hydro Essence vs. Round Lab Birch Serum
Structural barrier-lipid hydration at the site's lowest per-mL price against a broader birch-and-vitamin-C formula addressing hydration, brightening, and soothing together.
Criteria | AESTURA Atobarrier365 Hydro Essence | Round Lab Birch Juice Moisturizing Serum |
|---|---|---|
| Price | $32.00 | $20.00 |
| Price / unit | $0.16/mL | $0.40/mL |
| Size | 200 mL | 50 mL |
| Price checked | 9/16/2026 | 9/12/2026 |
Both are fragrance-free hydration formats, but AESTURA works structurally through barrier lipids while Round Lab spreads its formula across several functional categories at once.
Why compare these two specifically
A real price gap and a real formula-philosophy difference: single-mechanism barrier support at the lowest per-mL price on the site, against a broader, multi-functional botanical formula at a real premium.
Price per milliliter
AESTURA runs $0.16 per milliliter ($32.00 for 200mL). Round Lab runs $0.40 per milliliter ($20.00 for 50mL). AESTURA costs less than half per mL, in a bottle four times the size.
Barrier lipids vs. multi-category formula
AESTURA centers on squalane and cholesterol, real barrier-supporting lipids, a focused single-mechanism approach despite ceramide-adjacent marketing language. Round Lab spans birch sap, hyaluronic acid, real ascorbic acid, beta-glucan, and licorice root extract, addressing hydration, brightening, and soothing together in one formula.
Our take
If structural barrier repair at the lowest possible per-mL cost is the goal, AESTURA is the clear, focused pick. If you want a single step that also brightens and soothes alongside hydrating, Round Lab's broader formula covers more functional ground, at a real premium that reflects that added scope.
AESTURA Atobarrier365 Hydro Essence: $0.16/mL. Real squalane-and-cholesterol barrier lipids, the lowest per-mL price of any serum on the site.
Round Lab Birch Juice Moisturizing Serum: $0.40/mL. A broader formula combining hydration, real vitamin C brightening, and soothing botanicals in one step.
See our full best Korean serums by concern guide, or browse the rest of our serum coverage.
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Price checked 9/16/2026
Price checked 9/12/2026
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Frequently asked
Which is cheaper, AESTURA Hydro Essence or Round Lab Birch Serum?
AESTURA, at $0.16 per milliliter versus Round Lab's $0.40 per milliliter, less than half the cost, in a bottle four times the size.
Does Round Lab Birch Serum brighten skin?
It includes real ascorbic acid, a genuine vitamin C source with antioxidant and brightening properties, alongside its hydrating and soothing ingredients. AESTURA's formula is focused on barrier support rather than brightening.
Are AESTURA Hydro Essence and Round Lab Birch Serum fragrance-free?
Yes, both are confirmed fragrance-free.