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Kose INFINITY Multi-Protection Day Serum UV SPF 50+ PA++++
Kose

INFINITY Multi-Protection Day Serum UV SPF 50+ PA++++

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

Polished serum texture with botanicals, but ethanol, fragrance, octinoxate, sulfite and multiple PEGs erode sensitivity/health scores.

◉ HYB Hybrid filters Hybrid filters — Mineral + chemical filters together for the best of both. ((· BS Broad spectrum Broad spectrum — Blocks UVA + UVB — covers the whole sun-damage spectrum.
Where to buy it
YesStyle US In stock
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66.3
Composite
Composite score · independent
Ranks #1069 of 1558 in the current catalogue. Polished serum texture with botanicals, but ethanol, fragrance, octinoxate, sulfite and multiple PEGs erode sensitivity/health scores.
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. 82
Sensitivity safety Risk for reactive skin — fragrance, alcohol, and known sensitisers. 35
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. 76
Health safety Endocrine concerns and systemic absorption signals across the whole formula. 40
02 Composition · key UV filters 5 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.
Octinoxate Legacy Older organic filter. Photostable in combination; some literature concerns.
Bemotrizinol Modern Next-gen photostable filter; low irritation profile.
Uvinul A Plus Modern Next-gen photostable filter; low irritation profile.
Titanium Dioxide 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.
Hybrid
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.
No
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 polished hybrid serum combining tranexamic acid, niacinamide, ergothioneine, and a modern filter blend of zinc oxide, bemotrizinol, Uvinul A Plus, octinoxate, and titanium dioxide. Filter modernity and texture are strong points; ethanol, fragrance, sulfite, and octinoxate are the trade-offs.

Pros
  • Tranexamic acid and niacinamide lead the active list
  • DHHB (Uvinul A Plus) and BEMT add modern UVA defense
  • Ergothioneine and Centella extract layer in antioxidants
  • Serum texture feels light and breathable on application
  • Multiple botanical ferments and extracts in the matrix
Cons
  • Ethanol sits in the upper portion of the INCI
  • Fragrance present alongside synthetic dyes Blue 1 and Acid Red 52
  • Sodium metabisulfite is a known sulfite allergen
  • Octinoxate remains in the filter mix

Who it's for: Buyers wanting a skincare-leaning daytime serum with brightening actives, who tolerate alcohol and fragrance.

04 Full ingredient list (INCI) 58 ingredients
MODERN FILTER 2 LEGACY FILTER 1 MINERAL FILTER 2 ADDED FRAGRANCE 1 NATURAL FRAGRANCE 0 ALCOHOL 1 WATCH 1 ACTIVE 4
Tranexamic Acid· Niacinamide Vitamin B3 — barrier + brightening. ·Water· Zinc Oxide Mineral UV filter — physical block; reef-safer. · Ethylhexyl Methoxycinnamate Octinoxate — endocrine-disruption literature. ·Propylene Glycol Dicaprylate/Dicaprate·Dipropylene Glycol·Cetyl Ethylhexanoate· Alcohol Drying short-chain alcohol — can compromise the skin barrier and disturb the film if used in high amounts. ·Dimethicone· Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine Tinosorb S — broad-spectrum, very photostable. ·5-triazine (pending review)· Diethylamino Hydroxybenzoyl Hexyl Benzoate Uvinul A Plus — modern photostable UVA filter. ·Silica·PEG-40 Hydrogenated Castor Oil·Butylene Glycol·Phenyl Trimethicone·Ergothioneine·Leonurus Sibiricus Extract (pending review)·Cnidium Officinale Root Water·Camellia Sinensis Leaf Extract· Centella Asiatica Extract Centella — calming, repair. ·Litchi Chinensis Fruit Extract·Rhodiola Rosea Root Extract·Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer·Isopropyl Titanium Triisostearate·Xanthan Gum·Citric Acid· Glycerin Humectant — the workhorse hydrator. ·Glyceryl Stearate·Cholesterol· Bht Antioxidant preservative; trace concern. ·Cetearyl Alcohol·Cyclopentasiloxane·Sodium Metabisulfite·Behenyl Alcohol·Peg-240/Hdi Copolymer Bis-decyltetradeceth-20 Ether·Steareth-2 Phosphate·Ceteth-10 Phosphate·Polyhydroxystearic Acid·Isopropyl Myristate·Methicone·Sorbitan Oleate·Potassium Laurate·Potassium Phosphate·Sodium Phosphate·Potassium Chloride·Sodium Chloride·crosslinked methylphenylpolysiloxane (2 (pending review)· Squalane Plant emollient; skin-mimicking. ·Hydrogenated Lecithin·Phenoxyethanol· Fragrance Synthetic fragrance blend — a common irritant. Composition is a trade secret; can include dozens of compounds. Avoid if your skin is reactive. · Titanium Dioxide Mineral UV filter — physical block; reef-safer. ·Blue 1·Acid Red 52·Active ingredient No brand (pending review)·Other ingredientsThis list of ingredients represents all options or variants of this product. Actual ingredients in a given product option may vary from this list.Ingredients subject to change at manufacturer's discretion. For the most complete and up-to-date list of ingredients (pending review)
Source: brand-published INCI. Last verified 2026. Show in detail
01 Tranexamic Acid Tranexamic Acid
02 Niacinamide ACTIVE Vitamin B3 — barrier + brightening.
03 Water Water
04 Zinc Oxide MINERAL FILTER Mineral UV filter — physical block; reef-safer.
05 Ethylhexyl Methoxycinnamate LEGACY FILTER Octinoxate — endocrine-disruption literature.
06 Propylene Glycol Dicaprylate/Dicaprate Propylene Glycol Dicaprylate/Dicaprate
07 Dipropylene Glycol Dipropylene Glycol
08 Cetyl Ethylhexanoate Cetyl Ethylhexanoate
09 Alcohol ALCOHOL Drying short-chain alcohol — can compromise the skin barrier and disturb the film if used in high amounts.
10 Dimethicone Dimethicone
11 Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine MODERN FILTER Tinosorb S — broad-spectrum, very photostable.
12 5-triazine Pending review
13 Diethylamino Hydroxybenzoyl Hexyl Benzoate MODERN FILTER Uvinul A Plus — modern photostable UVA filter.
14 Silica Silica
15 PEG-40 Hydrogenated Castor Oil PEG-40 Hydrogenated Castor Oil
16 Butylene Glycol Butylene Glycol
17 Phenyl Trimethicone Phenyl Trimethicone
18 Ergothioneine Ergothioneine
19 Leonurus Sibiricus Extract Pending review
20 Cnidium Officinale Root Water Cnidium Root Water
21 Camellia Sinensis Leaf Extract Green Tea Leaf Extract
22 Centella Asiatica Extract ACTIVE Centella — calming, repair.
23 Litchi Chinensis Fruit Extract Lychee Fruit Extract
24 Rhodiola Rosea Root Extract
25 Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
26 Isopropyl Titanium Triisostearate Isopropyl Titanium Triisostearate
27 Xanthan Gum Xanthan Gum
28 Citric Acid Citric Acid
29 Glycerin ACTIVE Humectant — the workhorse hydrator.
30 Glyceryl Stearate Glyceryl Stearate
31 Cholesterol Cholesterol
32 Bht WATCH Antioxidant preservative; trace concern.
33 Cetearyl Alcohol Cetearyl Alcohol
34 Cyclopentasiloxane Cyclopentasiloxane
35 Sodium Metabisulfite Sodium Metabisulfite
36 Behenyl Alcohol Behenyl Alcohol
37 Peg-240/Hdi Copolymer Bis-decyltetradeceth-20 Ether PEG-240/HDI Copolymer Bis-Decyltetradeceth-20 Ether
38 Steareth-2 Phosphate
39 Ceteth-10 Phosphate Ceteth-10 Phosphate
40 Polyhydroxystearic Acid Polyhydroxystearic Acid
41 Isopropyl Myristate Isopropyl Myristate
42 Methicone Methicone
43 Sorbitan Oleate
44 Potassium Laurate Potassium Laurate
45 Potassium Phosphate Potassium Phosphate
46 Sodium Phosphate Sodium Phosphate
47 Potassium Chloride
48 Sodium Chloride Sodium Chloride
49 crosslinked methylphenylpolysiloxane (2 Pending review
50 Squalane ACTIVE Plant emollient; skin-mimicking.
51 Hydrogenated Lecithin Hydrogenated Lecithin
52 Phenoxyethanol Phenoxyethanol
53 Fragrance ADDED FRAGRANCE Synthetic fragrance blend — a common irritant. Composition is a trade secret; can include dozens of compounds. Avoid if your skin is reactive.
54 Titanium Dioxide MINERAL FILTER Mineral UV filter — physical block; reef-safer.
55 Blue 1 Blue 1
56 Acid Red 52 Acid Red 52
57 Active ingredient No brand Pending review
58 Other ingredientsThis list of ingredients represents all options or variants of this product. Actual ingredients in a given product option may vary from this list.Ingredients subject to change at manufacturer's discretion. For the most complete and up-to-date list of ingredients Pending review