Round Lab ROUND LAB BIRCH JUICE MOISTURIZING TONER

What is this product?

Round Lab's Birch Juice Moisturizing Toner is a 21-ingredient hydrating toner with no fragrance compound, no declared fragrance allergen, no essential oil, no denatured alcohol and no exfoliating acid anywhere on the list. It prints a figure for the botanical in its name, birch sap at 10,000ppm, which is 1 percent of the formula, and it is backed by two skin-tolerability panels on this exact product, 32 subjects in Korea in 2018 and 30 in Germany in 2023. Two things to weigh before buying: on the pages collected here the brand publishes no hydration trial of any kind behind its moisture copy and no pH, and free ascorbic acid sits 18th, which is a common stinger on reactive skin at an amount the label does not disclose. The 300ml fill and a lipid-free base make it a first-step toner that needs a cream after it.

What makes it different?

Two things set it apart from the three Round Lab records compared here. First, it prints an amount for its headline botanical, 10,000ppm, and the same brand prints 10,967ppm for the same botanical in its sibling pad, so the two disclosures are specific enough to disagree with each other. Second, its tolerability evidence names this exact product rather than a line: a Korean primary-irritation panel of 32 in 2018 and a German epicutaneous panel of 30 in 2023, both printed on the brand's own page. Against that, on the surfaces collected here the moisture story is entirely unevidenced, with no trial, endpoint or subject count behind any hydration sentence, and no pH is published for a formula containing free ascorbic acid. The label is also structurally bare in a way that matters for layering: no oil, no wax, no silicone and only two gelling agents at the very end of the list. Its mandatory disclosure records manufacture in Korea by Cosmax for Seorin Company, 36 months before opening and 12 after, and the notice block on this product carries no functional-cosmetic row at all.

What is in it?

The full ingredient list as the brand publishes it, in the printed order. Each name links to what we know about that ingredient.

This brand publishes its ingredient list in Korean only. Names below are the matching INCI names from the Korean Cosmetic Association ingredient dictionary.

Key ingredient

• Water
• Glycerin
• Propanediol
• Glycereth-26
• Pentylene Glycol
• Betula Platyphylla Japonica Juice
• 1,2-Hexanediol
• Chondrus Crispus Extract
• Saccharum Officinarum (Sugarcane) Extract
• Sodium Hyaluronate
• Hyaluronic Acid
• Panthenol
• Tromethamine
• Dipotassium Glycyrrhizate
• Glyceryl Caprylate
• Glyceryl Glucoside
• Butylene Glycol
• Ascorbic Acid
• Carbomer
• Xanthan Gum
• Disodium EDTA

Ingredients with no mark are ones we found nothing notable about, and when marks overlap on one ingredient we show the caution first.

Did the ad claims hold up?

We checked 9 lines this product advertises against the ingredient list and public documents. 2 of them hold up. The rest are only partly right or have nothing behind them.

Claims translated from Korean, originals preserved.

Each line is quoted as the brand published it, and each one was read on its own against the ingredient list and the documents the brand publishes.

How we read these lines

What else is worth seeing?

Products we read alongside this one.

• Round Lab 1025 Dokdo TonerAnother product in the same category
• Round Lab Birch Juice Moisturizing PadAnother product in the same category
• Round Lab Birch Juice Moisturizing CreamAnother product in the same category