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ROUND LAB Birch Juice Moisturizing Sun Stick
ROUND LAB

Birch Juice Moisturizing Sun Stick

SPF 50+ · PA++++
Our score 93.2 / 100

No fragrance or ethanol is listed. Light esters and silicone elastomers may balance the wax structure; actual film weight and wear are uncertain, with no specific health concern established.

Invisible No white cast — chemical/hybrid filters that straight-up disappear on skin. South Korea
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.
Chemical
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.
Stick
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
Where to buy it
YesStyle US In stock
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93.2
Composite score · independent
Ranks #89 of 1759 in the current catalogue. No fragrance or ethanol is listed. Light esters and silicone elastomers may balance the wax structure; actual film weight and wear are uncertain, with no specific health concern established.
Composite is a weighted blend: UV 25% · Modernity 10% · Sensitivity 15% · Environment 10% · Elegance 15% · Health 25%. That's the recipe.
The score breakdown
UV protection How hard it blocks UVA + UVB across the spectrum at the stated SPF/PA. 100
Filter modernity Dings legacy filters (octinoxate, oxybenzone); rewards photostable next-gen ones. 100
Sensitivity safety Risk for reactive skin — fragrance, alcohol, and known sensitisers. 90
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. 81
Health safety Endocrine concerns and systemic absorption signals across the whole formula. 90
02 Composition · key UV filters 4 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
Uvinul A Plus Modern Next-gen photostable filter; low irritation profile.
Uvinul T 150 Modern Next-gen photostable filter; low irritation profile.
Parsol SLX Modern Next-gen photostable filter; low irritation profile.
Bemotrizinol Modern Next-gen photostable filter; low irritation profile.
04 Full ingredient list (INCI) 51 ingredients
MODERN FILTER 4 LEGACY FILTER 1 MINERAL FILTER 0 ADDED FRAGRANCE 0 NATURAL FRAGRANCE 0 ALCOHOL 0 WATCH 0 ACTIVE 8
Water·Coco-caprylate/Caprate·Dibutyl Adipate·Synthetic Wax· Butyloctyl Salicylate Salicylate-class booster; supports avobenzone. · Diethylamino Hydroxybenzoyl Hexyl Benzoate Uvinul A Plus — modern photostable UVA filter. ·Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer·Butylene Glycol· Ethylhexyl Triazone Uvinul T 150 — high-efficiency UVB filter. ·Ozokerite· Niacinamide Vitamin B3 — barrier + brightening. ·Vinyl Dimethicone· Polysilicone-15 Parsol SLX · Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine Tinosorb S — broad-spectrum, very photostable. ·Betula Platyphylla Japonica Juice·Glyceryl Glucoside· Glycerin Humectant — the workhorse hydrator. ·Laminaria Japonica Extract·Ulmus Davidiana Root Extract·Aloe Barbadensis Leaf Extract·Viola Mandshurica Flower Extract·Dioscorea Japonica Root Extract· Hyaluronic Acid Hyaluronic acid — humectant. ·Ascorbic Acid· Sodium Hyaluronate Hyaluronic acid — humectant. ·Portulaca Oleracea Extract·Dipotassium Glycyrrhizate· Allantoin Soothing; barrier-supportive. ·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 Smoothing active. · Ethylhexylglycerin Humectant — the workhorse hydrator. ·Polyglyceryl-5 Polyricinoleate·Glyceryl Caprylate·Caprylyl Glycol·Oryza Sativa Bran Oil·Lauryl Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone·Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate·Sodium Chloride·1,2-Hexanediol· Tocopherol Vitamin E — antioxidant.
Source: brand-published INCI. Last verified 2026. Show in detail
01 Water Water
02 Coco-caprylate/Caprate Coco-Caprylate/Caprate
03 Dibutyl Adipate Dibutyl Adipate
04 Synthetic Wax
05 Butyloctyl Salicylate LEGACY FILTER Salicylate-class booster; supports avobenzone.
06 Diethylamino Hydroxybenzoyl Hexyl Benzoate MODERN FILTER Uvinul A Plus — modern photostable UVA filter.
07 Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer
08 Butylene Glycol Butylene Glycol
09 Ethylhexyl Triazone MODERN FILTER Uvinul T 150 — high-efficiency UVB filter.
10 Ozokerite Ozokerite
11 Niacinamide ACTIVE Vitamin B3 — barrier + brightening.
12 Vinyl Dimethicone Vinyl Dimethicone
13 Polysilicone-15 MODERN FILTER Parsol SLX
14 Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine MODERN FILTER Tinosorb S — broad-spectrum, very photostable.
15 Betula Platyphylla Japonica Juice Japanese White Birch Juice
16 Glyceryl Glucoside Glyceryl Glucoside
17 Glycerin ACTIVE Humectant — the workhorse hydrator.
18 Laminaria Japonica Extract Kombu Extract
19 Ulmus Davidiana Root Extract Korean Elm Root Extract
20 Aloe Barbadensis Leaf Extract Aloe Vera Leaf Extract
21 Viola Mandshurica Flower Extract Manchurian Violet Flower Extract
22 Dioscorea Japonica Root Extract Japanese Yam (Dioscorea Japonica) Root Extract
23 Hyaluronic Acid ACTIVE Hyaluronic acid — humectant.
24 Ascorbic Acid Ascorbic Acid (Vitamin C)
25 Sodium Hyaluronate ACTIVE Hyaluronic acid — humectant.
26 Portulaca Oleracea Extract
27 Dipotassium Glycyrrhizate Dipotassium Glycyrrhizate
28 Allantoin ACTIVE Soothing; barrier-supportive.
29 Nonapeptide-1 Nonapeptide-1
30 Dipeptide Diaminobutyroyl Benzylamide Diacetate
31 Acetyl Hexapeptide-8 Argireline
32 Copper Tripeptide-1 Copper Tripeptide-1
33 Tripeptide-1
34 Palmitoyl Tetrapeptide-7 Palmitoyl Tetrapeptide-7
35 Palmitoyl Tripeptide-1 Palmitoyl Tripeptide-1
36 Palmitoyl Tripeptide-5 Palmitoyl Tripeptide-5
37 Palmitoyl Pentapeptide-4 Matrixyl (Palmitoyl Pentapeptide-4)
38 Palmitoyl Hexapeptide-12 Palmitoyl Hexapeptide-12
39 Pentapeptide-3
40 Hexapeptide-9 Hexapeptide-9
41 Adenosine ACTIVE Smoothing active.
42 Ethylhexylglycerin ACTIVE Humectant — the workhorse hydrator.
43 Polyglyceryl-5 Polyricinoleate
44 Glyceryl Caprylate Glyceryl Caprylate
45 Caprylyl Glycol Caprylyl Glycol
46 Oryza Sativa Bran Oil Rice Bran Oil
47 Lauryl Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone Lauryl Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone
48 Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate
49 Sodium Chloride Sodium Chloride
50 1,2-Hexanediol 1,2-Hexanediol
51 Tocopherol ACTIVE Vitamin E — antioxidant.