ISDIN Fusion Water Sunscreen SPF 50
78/100 overall score
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Ingredient & SPF scores
βοΈ
UV protection
Excellent
85
- +16 Octocrylene at #2, UV filter
- +28.5 Butyl Methoxydibenzoylmethane at #4, UV filter (UVA1 +15.2)
- +7.6 Ethylhexyl Salicylate at #5, UV filter
- +11.2 Phenylbenzimidazole Sulfonic Acid at #8, UV filter
- +9.6 Polysilicone-15 at #9, UV filter
- +38.4 Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine at #12, UV filter (UVA1 +12.8)
- β22.8 UVB coverage saturated
- β5.5 UVA2 coverage saturated
- +2 Label claims (SPF 50)
β’οΈ
Health safety
High
67
- +100 Starting score
- β30 Octocrylene at #2 (regulatory/evidence concern)
- β3.5 Avobenzone at #4, stacked (regulatory/evidence concern)
π€§
Allergens
Low
67
- +100 Starting score
- β18 Fragrance
- β12 Opaque "Fragrance", hidden allergens that can't be checked from the label
- β3 Photoallergen-tail UV filters (Octocrylene)
π₯
Eye sting
Medium
46
- +100 Starting score
- β16 Avobenzone at #4, migrates into eyes with sweat
- β22 Octocrylene at #2, migrates into eyes with sweat
- β6 Octisalate at #5, migrates into eyes with sweat
- β2 Ensulizole at #8, migrates into eyes with sweat
- β8 Fragrance
π
Fungal acne
Low
88
- +100 Starting score
- β12 1 polysorbate/sorbitan emulsifiers that feed Malassezia (Polysorbate 60)
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Fabric stains
High
30
- +100 Starting score
- β45 Avobenzone at #4, reacts with iron in wash water into rust-yellow stains
- β15 Octocrylene at #2, co-stains alongside avobenzone
- β10 Avobenzone + Octocrylene, the classic staining pair
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Moisture
Balanced
LightNourishing
- β 6.5 2 sebum-absorbing powders (Silica, Polymethyl Methacrylate)
- β 2 Sodium Hyaluronate at #19, hyaluronic family
- β 2 Humectant polyols
β¨
Finish
Matte
MatteDewy
- β 7 2 sebum-absorbing powders (Polymethyl Methacrylate, Silica)
π
Makeup base
Good
PillsPrimer
- β 3 Primer-style base, volatile silicones and dimethicone slip
- β 8 1 velvet elastomer fillers, blur and grip
- β 3 1 soft-focus powders in moderation
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Water resistance
Not resistant
Non-water-resistantWater-resistant
Nothing flagged in the ingredient list.
How we rate water resistance βFull ingredient list (30)
What each ingredient does and how it moves each rating: green helps, red hurts, β / β give the direction, and β / β shift a slider toward its ends (finish, moisture, makeup base). Auto-derived from our scoring rules and the ingredient's position.
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1 Water
Solvent base, the water phase
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Legacy UV filter (Octocrylene), high in the list, a primary filter
- β 16 UV protection
- β 22 migrates into eyes with sweat
- β 15 co-stains alongside avobenzone
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Humectant, pulls water into the skin
- 2 β nourishing humectant polyol
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Legacy UV filter (Avobenzone)
- β 28.5 UV protection, incl. long-UVA (UVA1)
- β 3.5 stacked (regulatory/evidence concern)
- β 16 migrates into eyes with sweat
- β 45 reacts with iron in wash water into rust-yellow stains
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Legacy UV filter (Octisalate)
- β 7.6 UV protection
- β 6 migrates into eyes with sweat
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Mattifying powder, absorbs oil and blurs the finish
- light β 5 sebum-absorbing powder
- matte β 6 sebum-absorbing powder
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Emollient, softens and smooths skin
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Legacy UV filter (Ensulizole), low in the list, likely a minor contributor
- β 11.2 UV protection
- β 2 migrates into eyes with sweat
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Modern UV filter, broad-spectrum and photostable (Polysilicone-15), low in the list, likely a minor contributor
- β 9.6 UV protection
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Humectant, pulls water into the skin
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11 Tromethamine
pH adjuster
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Modern UV filter, broad-spectrum and photostable (Tinosorb S), low in the list, likely a minor contributor
- β 38.4 UV protection, incl. long-UVA (UVA1)
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13 Silica
Mattifying powder, absorbs oil and blurs the finish
- light β 1.5 sebum-absorbing powder
- matte β 1 sebum-absorbing powder
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Emollient, softens and smooths skin
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Humectant, pulls water into the skin
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Antioxidant, protects the formula and skin
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Emulsifier, keeps oil and water blended
- β 12 feeds malassezia
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Emulsifier, keeps oil and water blended
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Humectant, pulls water into the skin
- 2 β nourishing hyaluronic family
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Antioxidant, protects the formula and skin
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21 Xanthan Gum
Thickener and texture, structures the gel or cream
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Preservative, keeps the formula from spoiling
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23 Fragrance
Fragrance
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Chelator, binds stray metal ions to keep the formula stable
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25 PEG-8
Emulsifier, keeps oil and water blended
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26 Tocopherol
Antioxidant, protects the formula and skin
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27 Tropolone
Supporting ingredient
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Antioxidant, protects the formula and skin
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Antioxidant, protects the formula and skin
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30 Citric Acid
pH adjuster