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su:m37 Micro-Active Sun Serum
su:m37

Micro-Active Sun Serum

SPF 50+ · PA++++ Invisible No white cast — chemical/hybrid filters that straight-up disappear on skin. South Korea global Formulation variant: global. Region-specific reformulations are tracked as separate products.

Octinoxate, ethanol, plus large allergen panel (bergamot, ylang ylang, rose, geraniol, citronellol, farnesol); high irritation risk.

◐ CHEM Chemical filters Chemical filters — Organic filters absorb UV. Cosmetically elegant, but filter choice matters. ((· 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.
Where to buy it
YesStyle US In stock
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69.3
Composite
Composite score · independent
Ranks #893 of 1558 in the current catalogue. Octinoxate, ethanol, plus large allergen panel (bergamot, ylang ylang, rose, geraniol, citronellol, farnesol); high irritation risk.
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. 100
Filter modernity Dings legacy filters (octinoxate, oxybenzone); rewards photostable next-gen ones. 83
Sensitivity safety Risk for reactive skin — fragrance, alcohol, and known sensitisers. 30
Reef / env. safety Reef toxicity plus how biodegradable the UV filters and surfactants are. 65
Cosmetic elegance Spread, finish, white-cast, and how it actually feels on skin. 75
Health safety Endocrine concerns and systemic absorption signals across the whole formula. 55
02 Composition · key UV filters 6 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
Octinoxate Legacy Older organic filter. Photostable in combination; some literature concerns.
Mexoryl XL Modern Next-gen photostable filter; low irritation profile.
Ecamsule (Mexoryl SX) Modern Next-gen photostable filter; low irritation profile.
PBSA Legacy Older organic filter. Photostable in combination; some literature concerns.
Bemotrizinol Modern Next-gen photostable filter; low irritation profile.
Uvinul T 150 Modern Next-gen photostable filter; low irritation profile.
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.
Essence
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.
No
Verdict Is it worth it?

A high-protection essence stacking octinoxate, bemotrizinol, ethylhexyl triazone, Mexoryl SX/XL, and PBSA for SPF 50+ PA++++. Cosmetically refined, but denatured alcohol, vinegar, and a long essential-oil/allergen list lower its skin-friendliness.

Pros
  • Modern filter blend covers UVA and UVB efficiently
  • Essence texture spreads thin and dries fast
  • Niacinamide, panthenol, and adenosine support barrier
  • Centella derivatives and phloretin add antioxidant value
Cons
  • Contains denatured alcohol and vinegar
  • Bergamot, ylang-ylang, and rose oils with 8+ declared allergens
  • Octinoxate is restricted in some regions
  • High sting potential on compromised or reactive skin

Who it's for: A resilient-skinned user wanting strong, modern UV protection in a fast-drying essence and unbothered by alcohol and essential-oil allergens.

04 Full ingredient list (INCI) 58 ingredients
MODERN FILTER 4 LEGACY FILTER 2 MINERAL FILTER 0 ADDED FRAGRANCE 0 NATURAL FRAGRANCE 12 ALCOHOL 1 WATCH 0 ACTIVE 6
Water· Ethylhexyl Methoxycinnamate Octinoxate — endocrine-disruption literature. · Alcohol Denat. Drying short-chain alcohol — can compromise the skin barrier and disturb the film if used in high amounts. ·Diisopropyl Sebacate·Propanediol·Tromethamine· Drometrizole Trisiloxane Mexoryl XL · Terephthalylidene Dicamphor Sulfonic Acid Ecamsule (Mexoryl SX) · Glycerin Humectant — the workhorse hydrator. · Niacinamide Vitamin B3 — barrier + brightening. ·Phenethyl Benzoate· Phenylbenzimidazole Sulfonic Acid PBSA ·Polyglyceryl-3 Distearate·Dimethicone·1‚2-Hexanediol· Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine Tinosorb S — broad-spectrum, very photostable. ·Cetearyl Alcohol·Lauroyl Lysine· Panthenol Vitamin B5 — soothing humectant. · Ethylhexyl Triazone Uvinul T 150 — high-efficiency UVB filter. ·Glyceryl Stearate Se·Polyglyceryl-3 Methylglucose Distearate·Polysilicone-11·Polyamide-8·Acrylates/C10-30 Alkyl Acrylate Crosspolymer·Butylene Glycol·Carbomer·Glyceryl Stearate Citrate·Sodium Stearoyl Glutamate·Succinoglycan·Vinegar· Adenosine Smoothing active. ·Xanthan Gum·Myristica Fragrans Extract·Trisodium Edta· Hydrolyzed Hyaluronic Acid Hyaluronic acid — humectant. ·Asiaticoside·Caprylyl Glycol·Decyl Glucoside·Madecassic Acid·Asiatic Acid·Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate·Phloretin· Tocopherol Vitamin E — antioxidant. ·Saccharomyces Polypeptides·Helianthus Annuus Seed Oil· Citrus Aurantium Bergamia Fruit Oil Essential / botanical oil — releases scent compounds (terpenes, aldehydes) naturally. Marketed as "natural" but still a recognised source of contact sensitivity. · Cananga Odorata Flower Oil Essential / botanical oil — releases scent compounds (terpenes, aldehydes) naturally. Marketed as "natural" but still a recognised source of contact sensitivity. · Rosa Damascena Flower Oil Essential / botanical oil — releases scent compounds (terpenes, aldehydes) naturally. Marketed as "natural" but still a recognised source of contact sensitivity. · Limonene Known fragrance allergen (one of the EU-26). Naturally found in essential oils; required to be listed by name in the EU. Can trigger sensitivity even when no synthetic parfum is added. · Linalool Known fragrance allergen (one of the EU-26). Naturally found in essential oils; required to be listed by name in the EU. Can trigger sensitivity even when no synthetic parfum is added. · Benzyl Benzoate Known fragrance allergen (one of the EU-26). Naturally found in essential oils; required to be listed by name in the EU. Can trigger sensitivity even when no synthetic parfum is added. · Citronellol Known fragrance allergen (one of the EU-26). Naturally found in essential oils; required to be listed by name in the EU. Can trigger sensitivity even when no synthetic parfum is added. · Benzyl Salicylate Known fragrance allergen (one of the EU-26). Naturally found in essential oils; required to be listed by name in the EU. Can trigger sensitivity even when no synthetic parfum is added. · Geraniol Known fragrance allergen (one of the EU-26). Naturally found in essential oils; required to be listed by name in the EU. Can trigger sensitivity even when no synthetic parfum is added. · Farnesol Known fragrance allergen (one of the EU-26). Naturally found in essential oils; required to be listed by name in the EU. Can trigger sensitivity even when no synthetic parfum is added. · Citral Known fragrance allergen (one of the EU-26). Naturally found in essential oils; required to be listed by name in the EU. Can trigger sensitivity even when no synthetic parfum is added. · Benzyl Alcohol Known fragrance allergen (one of the EU-26). Naturally found in essential oils; required to be listed by name in the EU. Can trigger sensitivity even when no synthetic parfum is added.
Source: brand-published INCI. Last verified 2026. Show in detail
01 Water Water
02 Ethylhexyl Methoxycinnamate LEGACY FILTER Octinoxate — endocrine-disruption literature.
03 Alcohol Denat. ALCOHOL Drying short-chain alcohol — can compromise the skin barrier and disturb the film if used in high amounts.
04 Diisopropyl Sebacate Diisopropyl Sebacate
05 Propanediol Propanediol
06 Tromethamine Tromethamine
07 Drometrizole Trisiloxane MODERN FILTER Mexoryl XL
08 Terephthalylidene Dicamphor Sulfonic Acid MODERN FILTER Ecamsule (Mexoryl SX)
09 Glycerin ACTIVE Humectant — the workhorse hydrator.
10 Niacinamide ACTIVE Vitamin B3 — barrier + brightening.
11 Phenethyl Benzoate Phenethyl Benzoate
12 Phenylbenzimidazole Sulfonic Acid LEGACY FILTER PBSA
13 Polyglyceryl-3 Distearate Polyglyceryl-3 Distearate
14 Dimethicone Dimethicone
15 1‚2-Hexanediol 1,2-Hexanediol
16 Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine MODERN FILTER Tinosorb S — broad-spectrum, very photostable.
17 Cetearyl Alcohol Cetearyl Alcohol
18 Lauroyl Lysine Lauroyl Lysine
19 Panthenol ACTIVE Vitamin B5 — soothing humectant.
20 Ethylhexyl Triazone MODERN FILTER Uvinul T 150 — high-efficiency UVB filter.
21 Glyceryl Stearate Se Glyceryl Stearate SE
22 Polyglyceryl-3 Methylglucose Distearate Polyglyceryl-3 Methylglucose Distearate
23 Polysilicone-11 Polysilicone-11
24 Polyamide-8
25 Acrylates/C10-30 Alkyl Acrylate Crosspolymer Acrylates/C10-30 Alkyl Acrylate Crosspolymer
26 Butylene Glycol Butylene Glycol
27 Carbomer Carbomer
28 Glyceryl Stearate Citrate Glyceryl Stearate Citrate
29 Sodium Stearoyl Glutamate Sodium Stearoyl Glutamate
30 Succinoglycan
31 Vinegar
32 Adenosine ACTIVE Smoothing active.
33 Xanthan Gum Xanthan Gum
34 Myristica Fragrans Extract Nutmeg Extract
35 Trisodium Edta Trisodium EDTA
36 Hydrolyzed Hyaluronic Acid ACTIVE Hyaluronic acid — humectant.
37 Asiaticoside Asiaticoside
38 Caprylyl Glycol Caprylyl Glycol
39 Decyl Glucoside Decyl Glucoside
40 Madecassic Acid Madecassic Acid
41 Asiatic Acid Asiatic Acid
42 Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate
43 Phloretin
44 Tocopherol ACTIVE Vitamin E — antioxidant.
45 Saccharomyces Polypeptides
46 Helianthus Annuus Seed Oil Sunflower Seed Oil
47 Citrus Aurantium Bergamia Fruit Oil NATURAL FRAGRANCE Essential / botanical oil — releases scent compounds (terpenes, aldehydes) naturally. Marketed as "natural" but still a recognised source of contact sensitivity.
48 Cananga Odorata Flower Oil NATURAL FRAGRANCE Essential / botanical oil — releases scent compounds (terpenes, aldehydes) naturally. Marketed as "natural" but still a recognised source of contact sensitivity.
49 Rosa Damascena Flower Oil NATURAL FRAGRANCE Essential / botanical oil — releases scent compounds (terpenes, aldehydes) naturally. Marketed as "natural" but still a recognised source of contact sensitivity.
50 Limonene NATURAL FRAGRANCE Known fragrance allergen (one of the EU-26). Naturally found in essential oils; required to be listed by name in the EU. Can trigger sensitivity even when no synthetic parfum is added.
51 Linalool NATURAL FRAGRANCE Known fragrance allergen (one of the EU-26). Naturally found in essential oils; required to be listed by name in the EU. Can trigger sensitivity even when no synthetic parfum is added.
52 Benzyl Benzoate NATURAL FRAGRANCE Known fragrance allergen (one of the EU-26). Naturally found in essential oils; required to be listed by name in the EU. Can trigger sensitivity even when no synthetic parfum is added.
53 Citronellol NATURAL FRAGRANCE Known fragrance allergen (one of the EU-26). Naturally found in essential oils; required to be listed by name in the EU. Can trigger sensitivity even when no synthetic parfum is added.
54 Benzyl Salicylate NATURAL FRAGRANCE Known fragrance allergen (one of the EU-26). Naturally found in essential oils; required to be listed by name in the EU. Can trigger sensitivity even when no synthetic parfum is added.
55 Geraniol NATURAL FRAGRANCE Known fragrance allergen (one of the EU-26). Naturally found in essential oils; required to be listed by name in the EU. Can trigger sensitivity even when no synthetic parfum is added.
56 Farnesol NATURAL FRAGRANCE Known fragrance allergen (one of the EU-26). Naturally found in essential oils; required to be listed by name in the EU. Can trigger sensitivity even when no synthetic parfum is added.
57 Citral NATURAL FRAGRANCE Known fragrance allergen (one of the EU-26). Naturally found in essential oils; required to be listed by name in the EU. Can trigger sensitivity even when no synthetic parfum is added.
58 Benzyl Alcohol NATURAL FRAGRANCE Known fragrance allergen (one of the EU-26). Naturally found in essential oils; required to be listed by name in the EU. Can trigger sensitivity even when no synthetic parfum is added.