Round Lab Birch Juice Mild-Up Sunscreen

What is this product?

A Korean mineral sunscreen from Round Lab's birch line, rated SPF 50+ and PA++++ by human application testing at a named Korean institute, with zinc oxide as the only UV filter across 35 listed entries and no organic filter present. The vehicle is silicone and wax heavy, which is how a full mineral load stays wearable, over a water phase of glycerin, propanediol, two hyaluronates and glyceryl glucoside that the brand markets as the moist mineral sunscreen. Birch sap is disclosed at 1,045 ppm, the only concentration published for any entry. No fragrance entry appears, but chamomile flower oil and pine leaf oil do. Strongest for sensitive or dry skin that finds mineral sunscreens chalky; white cast is unmeasured on every surface read.

What makes it different?

Two things set it apart from a standard mineral sunscreen: a deliberately moist cream vehicle aimed at people who reject mineral filters for their dry finish, and an unusually documented evidence stack for the protection side, with a named institute for the SPF and PA figures, a named institute for non nano particle analysis, a German dermatological panel and a named institute for the filter exclusion analysis.

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, except 1 with no dictionary entry, left in Korean.

Key ingredient

• Water
• Zinc Oxide
• Cyclohexasiloxane
• Butyloctyl Salicylate
• Propanediol
• Propylheptyl Caprylate
• Isododecane
• Caprylyl Methicone
• Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone
• Methyl Methacrylate Crosspolymer
• Methyl Trimethicone
• Betula Platyphylla Japonica Juice
• Cryptomeria Japonica Leaf Extract
• Nelumbo Nucifera Leaf Extract
• Saccharomyces Ferment Filtrate
• Glyceryl Glucoside
• Sodium Hyaluronate
• Hyaluronic Acid
• Glycerin
• Butylene Glycol
• Triethoxycaprylylsilane
• Artemisia Annua Extract
• Anthemis Nobilis Flower Oil
• Pinus Sylvestris Leaf Oil
• Ethylhexylglycerin
• Ascorbic Acid
• Tocopherol
• Glyceryl Caprylate
• Caprylyl Glycol
• Polymethylsilsesquioxane
• Lauryl Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone
• 1,2-Hexanediol
• Polyglyceryl-2 Dipolyhydroxystearate
• Disteardimonium Hectorite
• 마그네슘설페이트ㅋ

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

We could not place these in the list above: Chamomilla Recutita (Matricaria) Flower Oil, Pinus Sylvestris Leaf Oil

Did the ad claims hold up?

We checked 40 lines this product advertises against the ingredient list and public documents. 13 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 Birch Moisture Sun CreamAnother product in the same category
• Round Lab Birch Juice Moisturizing Tone Up Sun CreamAnother product in the same category