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ROUND LAB Birch Juice Moisturizing UVLock Sun Cushion
ROUND LAB

Birch Juice Moisturizing UVLock Sun Cushion

SPF 50+ · PA++++ Tone-up Brightening veil from mineral & tone-up formulas; evens out your skin tone. South Korea global Formulation variant: global. Region-specific reformulations are tracked as separate products.

Mineral, FF, alcohol-free, calming botanicals; very low irritant load and benign safety profile.

△ MIN Mineral filters Mineral filters — Physical filters (ZnO, TiO2) sit on top and reflect UV. Reef-safer and super gentle. ((· BS Broad spectrum Broad spectrum — Blocks UVA + UVB — covers the whole sun-damage spectrum. F F-FREE Fragrance-free Fragrance-free — No added fragrance — lower irritation risk if your skin's reactive. A A-FREE Alcohol-free Alcohol-free — No drying short-chain alcohols (denatured / SD alcohol).
Where to buy it
YesStyle US In stock
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87.0
Composite
Composite score · independent
Ranks #102 of 1558 in the current catalogue. Mineral, FF, alcohol-free, calming botanicals; very low irritant load and benign safety profile.
Composite is a weighted blend: UV 25% · Modernity 10% · Sensitivity 15% · Environment 10% · Elegance 15% · Health 25%. That's the recipe.
01 The score breakdown
UV protection How hard it blocks UVA + UVB across the spectrum at the stated SPF/PA. 98
Filter modernity Dings legacy filters (octinoxate, oxybenzone); rewards photostable next-gen ones. 80
Sensitivity safety Risk for reactive skin — fragrance, alcohol, and known sensitisers. 80
Reef / env. safety Reef toxicity plus how biodegradable the UV filters and surfactants are. 100
Cosmetic elegance Spread, finish, white-cast, and how it actually feels on skin. 73
Health safety Endocrine concerns and systemic absorption signals across the whole formula. 86
02 Composition · key UV filters 1 filters resolved
UVA-I 340–400nm UVA-I (340–400nm) — covered UVA-II 320–340nm UVA-II (320–340nm) — covered UVB 290–320nm UVB (290–320nm) — covered
Zinc Oxide Mineral Physical filter — sits on skin and reflects UV. Reef-safer.
03 The facts, at a glance
Protection
Filter type Mineral filters (zinc oxide, titanium dioxide) sit on skin and reflect UV. Chemical filters absorb UV. Hybrid runs both.
Mineral
Broad spectrum Covers both UVA and UVB. UVA drives aging and deeper damage; UVB gives you burns.
Yes
Formulation & feel
Texture How it feels going on — milk, gel, cream, spray, stick, essence, lotion, powder, or cushion.
Cushion
Finish How it looks once dry: matte, natural, dewy, or glowy.
Natural
Tinted Adds sheer pigment (iron oxides) that masks the white cast common to mineral filters and gives a skin-tone finish.
No
Fragrance-free No synthetic perfume added. Not FDA-defined in the US; the EU requires 'Parfum' + the 26 named allergens on the label. 'Unscented' is different — it can hide masking fragrance. Botanical oils still scent.
Yes
Alcohol-free No drying short-chain alcohols (alcohol denat., SD alcohol, ethanol). Doesn't mean fatty alcohols like cetyl or stearyl — those are emollients.
Yes
Verdict Is it worth it?

Global zinc-oxide cushion with a clean silicone-ester base and the familiar Round Lab botanical lineup — aloe, birch juice, allantoin, licorice root. Filter chemistry matches the brand's other mineral cushion; PA rating is documented even where the data is missing elsewhere.

Pros
  • All zinc oxide UV system with no organic UV chemistries
  • Fragrance-free and alcohol-free per INCI
  • Calming aloe, allantoin, and dipotassium glycyrrhizate
  • Cushion format eases mid-day reapplication over makeup
Cons
  • Single mineral filter can leave a visible cast on deeper tones
  • No niacinamide or peptide actives in the base
  • PA rating missing from the supplied documentation

Who it's for: Sensitive-skin buyers wanting a simple zinc-only cushion with no fragrance, drying alcohol, or essential oils, and willing to live with a slight cast.

04 Full ingredient list (INCI) 36 ingredients
MODERN FILTER 0 LEGACY FILTER 1 MINERAL FILTER 1 ADDED FRAGRANCE 0 NATURAL FRAGRANCE 0 ALCOHOL 0 WATCH 0 ACTIVE 6
Water· Zinc Oxide Mineral UV filter — physical block; reef-safer. ·Caprylyl Methicone·Methyl Trimethicone·Butylene Glycol Dicaprylate/Dicaprate· Butyloctyl Salicylate Salicylate-class booster; supports avobenzone. ·Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate·Propanediol· Glycerin Humectant — the workhorse hydrator. ·Methyl Methacrylate/Glycol Dimethacrylate Crosspolymer·Glyceryl Glucoside· Ethylhexylglycerin Humectant — the workhorse hydrator. ·Laminaria Japonica Extract·Ulmus Davidiana Root Extract·Aloe Barbadensis Leaf Extract·Viola Mandshurica Flower Extract·Dioscorea Japonica Root Extract· Sodium Hyaluronate Hyaluronic acid — humectant. · Hyaluronic Acid Hyaluronic acid — humectant. ·Dipotassium Glycyrrhizate· Allantoin Soothing; barrier-supportive. ·Portulaca Oleracea Extract·Betula Platyphylla Japonica Juice·Ascorbic Acid·Magnesium Sulfate·Aluminum Hydroxide·Disteardimonium Hectorite·Stearic Acid·Triethoxycaprylylsilane·Polyglyceryl-6 Polyricinoleate·1‚2-Hexanediol·Dicaprylyl Carbonate·Sorbitan Caprylate·Glyceryl Caprylate·Caprylyl Glycol· Tocopherol Vitamin E — antioxidant.
Source: brand-published INCI. Last verified 2026. Show in detail
01 Water Water
02 Zinc Oxide MINERAL FILTER Mineral UV filter — physical block; reef-safer.
03 Caprylyl Methicone Caprylyl Methicone
04 Methyl Trimethicone Methyl Trimethicone
05 Butylene Glycol Dicaprylate/Dicaprate Butylene Glycol Dicaprylate/Dicaprate
06 Butyloctyl Salicylate LEGACY FILTER Salicylate-class booster; supports avobenzone.
07 Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate
08 Propanediol Propanediol
09 Glycerin ACTIVE Humectant — the workhorse hydrator.
10 Methyl Methacrylate/Glycol Dimethacrylate Crosspolymer Methyl Methacrylate/Glycol Dimethacrylate Crosspolymer
11 Glyceryl Glucoside Glyceryl Glucoside
12 Ethylhexylglycerin ACTIVE Humectant — the workhorse hydrator.
13 Laminaria Japonica Extract Kombu Extract
14 Ulmus Davidiana Root Extract Korean Elm Root Extract
15 Aloe Barbadensis Leaf Extract Aloe Vera Leaf Extract
16 Viola Mandshurica Flower Extract Manchurian Violet Flower Extract
17 Dioscorea Japonica Root Extract Japanese Yam (Dioscorea Japonica) Root Extract
18 Sodium Hyaluronate ACTIVE Hyaluronic acid — humectant.
19 Hyaluronic Acid ACTIVE Hyaluronic acid — humectant.
20 Dipotassium Glycyrrhizate Dipotassium Glycyrrhizate
21 Allantoin ACTIVE Soothing; barrier-supportive.
22 Portulaca Oleracea Extract
23 Betula Platyphylla Japonica Juice Japanese White Birch Juice
24 Ascorbic Acid Ascorbic Acid (Vitamin C)
25 Magnesium Sulfate Magnesium Sulfate
26 Aluminum Hydroxide Aluminum Hydroxide
27 Disteardimonium Hectorite Disteardimonium Hectorite
28 Stearic Acid Stearic Acid
29 Triethoxycaprylylsilane Triethoxycaprylylsilane
30 Polyglyceryl-6 Polyricinoleate Polyglyceryl-6 Polyricinoleate
31 1‚2-Hexanediol 1,2-Hexanediol
32 Dicaprylyl Carbonate Dicaprylyl Carbonate
33 Sorbitan Caprylate
34 Glyceryl Caprylate Glyceryl Caprylate
35 Caprylyl Glycol Caprylyl Glycol
36 Tocopherol ACTIVE Vitamin E — antioxidant.