Biotherm Solaire Lacte Ultra-light Moisturizing Sun Spray SPF 30
66/100 overall score
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About this sunscreen
Biotherm Solaire Lacté Ultra-light Sun Spray SPF 30 is a chemical spray on older-generation filters: Butyl Methoxydibenzoylmethane, homosalate, ethylhexyl salicylate, and octocrylene. It wears with a balanced finish, low white cast, and a lightweight feel and is low on the pore-clogging scale, though it carries a medium chance of stinging near the eyes. Protection is rated good and it works well under makeup. Scoring 65.7, it is a light, easy-to-apply daily option.
Ingredient & SPF scores
☀️
UV protection
Good
60
- +30 Butyl Methoxydibenzoylmethane at #1, UV filter (UVA1 +16)
- +12 Homosalate at #2, UV filter
- +8 Ethylhexyl Salicylate at #3, UV filter
- +15.2 Octocrylene at #4, UV filter
- ×0.9 Limited long-UVA1 coverage
- +1 Label claims (SPF 30)
☢️
Health safety
Medium
46
- +100 Starting score
- −40 Homosalate at #2 (regulatory/evidence concern)
- −10.5 Octocrylene at #4, stacked (regulatory/evidence concern)
- −3.5 Avobenzone at #1, stacked (regulatory/evidence concern)
🤧
Allergens
Low
67
- +100 Starting score
- −18 Fragrance
- −12 Opaque "Fragrance", hidden allergens that can't be checked from the label
- −3 Photoallergen-tail UV filters (Octocrylene)
🔥
Eye sting
Medium
35
- +100 Starting score
- −24 Avobenzone at #1, migrates into eyes with sweat
- −15 Octocrylene at #4, migrates into eyes with sweat
- −9 Homosalate at #2, migrates into eyes with sweat
- −9 Octisalate at #3, migrates into eyes with sweat
- −8 Fragrance
🍄
Fungal acne
Low
95
- +100 Starting score
- −5 1 ubiquitous fatty ingredients (Cetearyl Glucoside), weak Malassezia signal
👕
Fabric stains
High
25
- +100 Starting score
- −50 Avobenzone at #1, reacts with iron in wash water into rust-yellow stains
- −15 Octocrylene at #4, co-stains alongside avobenzone
- −10 Avobenzone + Octocrylene, the classic staining pair
💧
Moisture
Balanced
LightNourishing
- ← 5 Volatile carriers flash off, leaving a dry finish
- → 10 Glycerin at #7, the anchor humectant
- → 0.5 1 fatty-alcohol emollients (Cetearyl Alcohol)
✨
Finish
Balanced
MatteDewy
- ← 4 Volatile carriers flash off, leaving a dry finish
💄
Makeup base
Good
PillsPrimer
- → 6 Primer-style base, volatile silicones and dimethicone slip
- → 8 1 velvet elastomer fillers, blur and grip
- ← 1.5 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 (21)
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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Legacy UV filter (Avobenzone), high in the list, a primary filter
- ↑ 30 UV protection, incl. long-UVA (UVA1)
- ↓ 3.5 stacked (regulatory/evidence concern)
- ↑ 24 migrates into eyes with sweat
- ↑ 50 reacts with iron in wash water into rust-yellow stains
-
Legacy UV filter (Homosalate), high in the list, a primary filter
- ↑ 12 UV protection
- ↑ 9 migrates into eyes with sweat
-
Legacy UV filter (Octisalate), high in the list, a primary filter
- ↑ 8 UV protection
- ↑ 9 migrates into eyes with sweat
-
Legacy UV filter (Octocrylene)
- ↑ 15.2 UV protection
- ↓ 10.5 stacked (regulatory/evidence concern)
- ↑ 15 migrates into eyes with sweat
- ↑ 15 co-stains alongside avobenzone
-
5 Water
Solvent base, the water phase
-
Volatile silicone, flashes off for a light finish
- light ← 5 volatile carrier, flashes off
- matte ← 4 volatile carrier, flashes off
-
7 Glycerin
Humectant, pulls water into the skin
- 10 → nourishing the anchor humectant
-
Emollient, softens and smooths skin
-
Humectant, pulls water into the skin
-
10 PEG-8
Emulsifier, keeps oil and water blended
-
Fatty alcohol, an emollient and thickener, not the drying kind
- 0.5 → nourishing fatty-alcohol emollient
-
Emulsifier, keeps oil and water blended
- ↑ 5 minor malassezia feeder
-
Emollient, softens and smooths skin
-
Preservative, keeps the formula from spoiling
-
Preservative, keeps the formula from spoiling
-
Preservative, keeps the formula from spoiling
-
17 Fragrance
Fragrance
-
Antioxidant, protects the formula and skin
-
19 Xanthan Gum
Thickener and texture, structures the gel or cream
-
Chelator, binds stray metal ions to keep the formula stable
-
21 Citric Acid
pH adjuster
Is Biotherm Solaire Lacté Sun Spray good under makeup?
Yes, it is rated good as a makeup base. It wears with a lightweight, balanced finish, low white cast, and a low pore-clogging rating.
Does the Biotherm Solaire Lacte Ultra-light Moisturizing Sun Spray SPF 30 sting?
It carries a medium chance of stinging, so take care around the eyes. Otherwise the profile is gentle and ultra-light.
Is Biotherm Solaire Lacté SPF 30 a good sunscreen?
It scores 65.7 out of 100 with good protection. It is a light, easy-to-apply daily spray on older-generation filters.