Round Lab Birch Juice Moisturizing Sun Stick
Ingredients and claims, checked
Last checked September 9, 2026
Other stores (2)
- Olive Young USShips to the US
- Korean brand site (in Korean)
We don't earn anything from these links. If that ever changes, we'll label the link.
What is it like at a glance?
What the ingredients do
Hydration and softening lead, with 5 of 51 ingredients each. It also contains Diethylamino Hydroxybenzoyl Hexyl Benzoate.
By skin type
- DryGood fit
- OilyUse with care
- CombinationUse with care
- SensitiveNeutral
Piboo’s rating from user reports.
Worth knowing
- Has a fungal-acne trigger
- On pore-clogging lists
Made for
What is this product?
- Key ingredients
- Betula Alba Juice 0.1%, Niacinamide, Diethylamino Hydroxybenzoyl Hexyl Benzoate
- When
- Morning
A sun stick made with birch sap. It spreads easily and leaves a dewy finish.
Who is it for?
Less suited to
- Acne-prone skin avoiding waxy bases
What's good, and what to watch for?
Good points
- Contains Betula Alba Juice 0.1%
Watch-outs
- If you clog easily: Coco-Caprylate/Caprate, Synthetic Wax
- If you get fungal acne: Polyglyceryl-5 Polyricinoleate, Oryza Sativa (Rice) Bran Oil
How do you use it?
- Where in your routine
- Final morning step, after moisturiser and before makeup, with reapplication through the day
- Pairs well with
- A light humectant toner or essence under it
- A separate liquid sunscreen for the first application of the day
What is in it?
The full ingredient list as the brand publishes it, in the printed order. Tap a name to read 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 ingredientWorth a closer look
- Water
- Coco-Caprylate/Caprate
- Dibutyl Adipate
- Synthetic Wax
- Butyloctyl Salicylate
- Diethylamino Hydroxybenzoyl Hexyl Benzoate
- Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer
- Butylene Glycol
- Ethylhexyl Triazone
- Ozokerite
- Niacinamide
- Vinyl Dimethicone
- Polysilicone-15
- Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine
- Betula Platyphylla Japonica Juice
- Glyceryl Glucoside
- Glycerin
- Laminaria Japonica Extract
- Ulmus Davidiana Root Extract
- Aloe Barbadensis Leaf Extract
- Viola Mandshurica Flower Extract
- Dioscorea Japonica Root Extract
- Hyaluronic Acid
- Ascorbic Acid
- Sodium Hyaluronate
- Portulaca Oleracea Extract
- Dipotassium Glycyrrhizate
- Allantoin
- Nonapeptide-1
- Dipeptide Diaminobutyroyl Benzylamide Diacetate
- Acetyl Hexapeptide-8
- Copper Tripeptide-1
- Tripeptide-1
- Palmitoyl Tetrapeptide-7
- Palmitoyl Tripeptide-1
- Palmitoyl Tripeptide-5
- Palmitoyl Pentapeptide-4
- Palmitoyl Hexapeptide-12
- Pentapeptide-3
- Hexapeptide-9
- Adenosine
- Ethylhexylglycerin
- Polyglyceryl-5 Polyricinoleate
- Glyceryl Caprylate
- Caprylyl Glycol
- Oryza Sativa (Rice) Bran Oil
- Lauryl Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone
- Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate
- Sodium Chloride
- 1,2-Hexanediol
- Tocopherol
Ingredients with no mark are ones we found nothing notable about, and when marks overlap on one ingredient we show the caution first.
Claims
See the claim, checked
Claims, checked
Turn the dial at the bottom of the container to raise an appropriate amount of contents, then gently spread and apply. *Raise the contents by about 5mm before use. Due to the stick formulation, if raised excessively, the product may break or separate.
partly backed
We quote each claim exactly as the brand published it, then check it against the ingredient list and the brand's own documents.
What else is worth seeing?
Products we read alongside this one.
Which articles cover it?
Articles on this site that write about this product.