Biotherm Waterlover Hydrating Sun Milk SPF 50+
82/100 overall score
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Ingredient & SPF scores
☀️
UV protection
Excellent
92
- +48 Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine at #3, UV filter (UVA1 +16)
- +7.6 Ethylhexyl Salicylate at #5, UV filter
- +28.5 Butyl Methoxydibenzoylmethane at #7, UV filter (UVA1 +15.2)
- +17.6 Ethylhexyl Triazone at #9, UV filter
- +12 Drometrizole Trisiloxane at #23, UV filter (UVA1 +4.2)
- −14.8 UVB coverage saturated
- −8.5 UVA2 coverage saturated
- +2 Label claims (SPF 50)
☢️
Health safety
High
90
- +100 Starting score
- −10 Avobenzone at #7 (regulatory/evidence concern)
🤧
Allergens
Low
70
- +100 Starting score
- −18 Fragrance
- −12 Opaque "Fragrance", hidden allergens that can't be checked from the label
🔥
Eye sting
Low
66
- +100 Starting score
- −16 Avobenzone at #7, migrates into eyes with sweat
- −6 Octisalate at #5, migrates into eyes with sweat
- −4 Volatile alcohol at #8
- −8 Fragrance
🪨
Heavy feel
Low
98
- +100 Starting score
- −2 Butyrospermum Parkii Fruit at #26, butter/occlusive fat
🔴
Comedogenic
Low
81
- +100 Starting score
- −17 Isopropyl Palmitate at #4, heavy comedogenic ester
- −1 Myristic Acid at #28, moderate comedogenic signal
- −1 Palmitic Acid at #17, moderate comedogenic signal
🍄
Fungal acne
High
33
- +100 Starting score
- −12 1 free fatty acids that feed Malassezia (Myristic Acid)
- −9 1 oils/butters that feed Malassezia (Butyrospermum Parkii Fruit)
- −42 3 long-chain (C12+) esters that feed Malassezia (Isopropyl Palmitate, PEG-100 Stearate, Glyceryl Stearate)
- −4 2 ubiquitous fatty ingredients (Stearic Acid, Palmitic Acid), weak Malassezia signal
👕
Fabric stains
Medium
45
- +100 Starting score
- −45 Avobenzone at #7, reacts with iron in wash water into rust-yellow stains
- −10 Mexoryl XL at #23, oil-soluble UVA filter, fabric stains
💧
Moisture
Hydrating
LightNourishing
- ← 5 Volatile alcohol at #8
- ← 3 1 sebum-absorbing powders (Zea Mays Starch)
- → 16 Glycerin at #2, the anchor humectant
- → 1 Humectant polyols
- → 1 1 emollient lipids (Butyrospermum Parkii Fruit)
✨
Finish
Balanced
MatteDewy
- ← 3 1 sebum-absorbing powders (Zea Mays Starch)
- ← 1 Volatile alcohol at #8
- → 1 1 emollient lipids (Butyrospermum Parkii Fruit)
- → 4 1 slippy emollient esters (Isopropyl Palmitate)
💄
Makeup base
Okay
PillsPrimer
- → 2 Quick-setting carrier (alcohol at #8), fast, even canvas
- → 3 1 soft-focus powders in moderation
- ← 0.5 Gel polymers prone to pilling under friction (Acrylates/C10-30 Alkyl Acrylate Crosspolymer)
- ← 2 Occlusives/waxes float the foundation
- ← 3.5 Humectant syrup tackiness (partly offset by the base)
🌊
Water resistance
Not resistant
Non-water-resistantWater-resistant
Nothing flagged in the ingredient list.
How we rate water resistance →Full ingredient list (32)
What each ingredient does and how it moves each rating: green helps, red hurts, ↑ / ↓ give the direction, and ← / → 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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2 Glycerin
Humectant, pulls water into the skin
- 16 → nourishing the anchor humectant
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Modern UV filter, broad-spectrum and photostable (Tinosorb S), high in the list, a primary filter
- ↑ 48 UV protection, incl. long-UVA (UVA1)
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Emollient, softens and smooths skin
- ↑ 17 heavy comedogenic ester
- 4 → dewy slippy emollient ester
- ↑ 24 feeds malassezia
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Legacy UV filter (Octisalate)
- ↑ 7.6 UV protection
- ↑ 6 migrates into eyes with sweat
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Humectant, pulls water into the skin
- 1 → nourishing humectant polyol
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Legacy UV filter (Avobenzone)
- ↑ 28.5 UV protection, incl. long-UVA (UVA1)
- ↑ 16 migrates into eyes with sweat
- ↑ 45 reacts with iron in wash water into rust-yellow stains
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Volatile alcohol, a drying solvent that can sting eyes
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Modern UV filter, broad-spectrum and photostable (Uvinul T 150), low in the list, likely a minor contributor
- ↑ 17.6 UV protection
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Mattifying powder, absorbs oil and blurs the finish
- light ← 3 sebum-absorbing powder
- matte ← 3 sebum-absorbing powder
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Emulsifier, keeps oil and water blended
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12 Fragrance
Fragrance
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Emollient, softens and smooths skin
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Supporting ingredient
-
Occlusive, seals moisture into the skin
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16 Stearic Acid
Emollient, softens and smooths skin
- ↑ 2 minor malassezia feeder
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Emollient, softens and smooths skin
- ↑ 1 moderate comedogenic signal
- ↑ 2 minor malassezia feeder
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Emulsifier, keeps oil and water blended
- ↑ 9 feeds malassezia
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Emulsifier, keeps oil and water blended
- ↑ 9 feeds malassezia
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pH adjuster
-
Preservative, keeps the formula from spoiling
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Thickener and texture, structures the gel or cream
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Modern UV filter, broad-spectrum and photostable (Mexoryl XL), low in the list, likely a minor contributor
- ↑ 12 UV protection, incl. long-UVA (UVA1)
- ↑ 10 oil-soluble UVA filter, fabric stains
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24 Tocopherol
Antioxidant, protects the formula and skin
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25 Xanthan Gum
Thickener and texture, structures the gel or cream
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Botanical extract
- ↑ 2 butter/occlusive fat
- 1 → nourishing emollient lipid
- 1 → dewy emollient lipid
- ↑ 9 feeds malassezia
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Soothing, skin-conditioning active
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Emollient, softens and smooths skin
- ↑ 1 moderate comedogenic signal
- ↑ 12 feeds malassezia
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Supporting ingredient
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30 Citric Acid
pH adjuster
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Preservative, keeps the formula from spoiling
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Preservative, keeps the formula from spoiling