Round Lab
Round Lab Birch Juice Moisturizing Tone Up Sun Cream
Ingredient analysis and how the ad lines read

Read on 2026-09-09
What is this product?
Pick this when you want sun protection and a bit of visible evening-out in one step: titanium dioxide sits fourth and three iron oxides close the list, which is a proper tinting system rather than a bare mineral load, with birch sap disclosed at 1,000 ppm and a hydration block behind it. Two things to know before buying. It is a hybrid, not the organic-filter product the price-comparison listing calls it, since titanium dioxide is right there at position 4; and two essential oils, chamomile flower and Scots pine leaf, sit at positions 20 and 21, which undercuts the low-irritation tag attached to it. The brand publishes no text at all on its own product page, so every claim here comes from a reseller and the ingredient list is retailer-derived. No water resistance is declared.
What makes it different?
A tinted tone-up sunscreen whose only text surface is a reseller's specification row, which misclassifies its own filter system: the list carries titanium dioxide at position 4 alongside four organic filters, making it a hybrid rather than the organic-filter product the listing advertises.
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 3 with no dictionary entry, left in Korean.
- Water
- Propanediol
- Dibutyl Adipate
- Titanium Dioxide
- Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine
- Butylene Glycol
- Diethylamino Hydroxybenzoyl Hexyl Benzoate
- Methyl Trimethicone
- Butyloctyl Salicylate
- Niacinamide
- 페네틸벤조에이트
- Isononyl Isononanoate
- Polymethylsilsesquioxane
- 1,2-Hexanediol
- Betula Platyphylla Japonica Juice
- Sodium Hyaluronate
- Hyaluronic Acid
- Glyceryl Glucoside
- Artemisia Annua Extract
- Anthemis Nobilis Flower Oil
- Pinus Sylvestris Leaf Oil
- Allantoin
- Dipotassium Glycyrrhizate
- Panthenol
- Camellia Sinensis Seed Oil
- Yeast Ferment Extract
- Candida Bombicola/Glucose/Methyl Rapeseedate Ferment
- Ethylhexyl Triazone
- Pentylene Glycol
- Polyglyceryl-3 Methylglucose Distearate
- Polysilicone-15
- Stearic Acid
- Palmitic Acid
- Polyhydroxystearic Acid
- Potassium Cetyl Phosphate
- Aluminum Hydroxide
- Glyceryl Stearate
- Hydroxyacetophenone
- Poly C10-30 Alkyl Acrylate
- Isododecane
- Octyldodecanol
- Acrylates/C10-30 Alkyl Acrylate Crosspolymer
- Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
- Tromethamine
- Hydrogenated Lecithin
- Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer
- 폴리글리세릴-4아이소스테아레이트
- Polyglyceryl-2 Dipolyhydroxystearate
- 아이소프로필티타늄트라이아이소스테아레이트
- Adenosine
- Sodium Polyacrylate
- Sorbitan Isostearate
- Polymethyl Methacrylate
- Glyceryl Caprylate
- Glycerin
- Ascorbic Acid
- C12-16 Alcohols
- Cetearyl Alcohol
- Disodium EDTA
- Iron Oxide Yellow
- Iron Oxide Red
- Iron Oxide Black
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: 캐모마일꽃오일, 구주소나무잎오일, 아이소노닐아이소노나노에이트, 폴리글리세릴-3메틸글루코오스다이스테아레이트, 폴리글리세릴-4아이소스테아레이트, 폴리글리세릴-2다이폴리하이드록시스테아레이트, 솔비탄아이소스테아레이트, 스테아릭애씨드, 팔미틱애씨드
Did the ad claims hold up?
We checked 6 lines this product advertises against the ingredient list and public documents. One of them holds up. The rest are only partly right or have nothing behind them.
Claims translated from Korean, originals preserved.
backed by evidence1
- Effect: skin tone-up
Korean original
효과: 피부톤업
partly backed2
- SPF50+ / PA++++
- MFDS-notified functional ingredients: whitening help, wrinkle improvement help
Korean original
식약처 고시 기능성 성분: 미백도움, 주름개선도움
no evidence1
- Low irritation
Korean original
저자극
evidence says otherwise1
- Organic sunscreen
Korean original
유기자차
says nothing1
- Additional ingredient functions: moisture evaporation prevention, skin moisturizing, skin protection
Korean original
성분부가기능: 수분증발차단, 피부보습, 피부보호
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.
What else is worth seeing?
Products we read alongside this one.
Which articles cover it?
Articles on this site that write about this product.