Uriage Hyséac Eau Thermale Fluid SPF30
49/100 overall score
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About this sunscreen
Uriage Hyseac Eau Thermale Fluid is an SPF 30 chemical sunscreen using an older filter blend of ethylhexyl methoxycinnamate, ethylhexyl salicylate, octocrylene and avobenzone. It has a matte, lightweight finish with low white cast, works well under makeup, and is low on sting and breakout risk. Protection is rated weak and the score is 49.0/100, reflecting the dated filter set, so it is best as light daily cover rather than primary sun defense.
Ingredient & SPF scores
☀️
UV protection
Weak
25
- +17.1 Ethylhexyl Methoxycinnamate at #5, UV filter
- +7.6 Ethylhexyl Salicylate at #7, UV filter
- +12.8 Octocrylene at #8, UV filter
- +18 Butyl Methoxydibenzoylmethane at #14, UV filter (UVA1 +9.6)
- −2.3 UVB coverage saturated
- ×0.6 Almost no UVA1, poor aging protection
- ×0.75 Avobenzone + octinoxate degrade each other in sunlight
- +1 Label claims (SPF 30)
☢️
Health safety
Medium
50
- +100 Starting score
- −36 Octinoxate at #5 (regulatory/evidence concern)
- −10.5 Octocrylene at #8, stacked (regulatory/evidence concern)
- −3.5 Avobenzone at #14, 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
Low
65
- +100 Starting score
- −3 Avobenzone at #14, migrates into eyes with sweat
- −7 Octocrylene at #8, migrates into eyes with sweat
- −11 Octinoxate at #5, migrates into eyes with sweat
- −6 Octisalate at #7, migrates into eyes with sweat
- −8 Fragrance
🪨
Heavy feel
Low
99
- +100 Starting score
- −1 Hydrogenated Polydecene at #24, heavy oil
- +0.3 Volatile silicone at #3, flashes off
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Fungal acne
Low
86
- +100 Starting score
- −14 1 long-chain (C12+) esters that feed Malassezia (PEG-30 Dipolyhydroxystearate)
👕
Fabric stains
Medium
47
- +100 Starting score
- −28 Avobenzone at #14, reacts with iron in wash water into rust-yellow stains
- −15 Octocrylene at #8, co-stains alongside avobenzone
- −10 Avobenzone + Octocrylene, the classic staining pair
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Moisture
Light
LightNourishing
- ← 3 1 sebum-absorbing powders (Nylon-12)
- ← 10 Volatile carriers flash off, leaving a dry finish
- → 1 Glycerin at #13, the anchor humectant
- → 2 Sodium Hyaluronate at #36, hyaluronic family
- → 2 2 strong humectants (Urea, Trehalose)
✨
Finish
Matte
MatteDewy
- ← 3 1 sebum-absorbing powders (Nylon-12)
- ← 9 Volatile carriers flash off, leaving a dry finish
- ← 2 1 dry-touch emollients reduce greasy shine (Dicaprylyl Ether)
💄
Makeup base
Good
PillsPrimer
- → 8 Primer-style base, volatile silicones and dimethicone slip
- → 3 1 soft-focus powders in moderation
- ← 0.5 Gel polymers prone to pilling under friction (Glyceryl Polyacrylate)
🌊
Water resistance
Not resistant
Non-water-resistantWater-resistant
Nothing flagged in the ingredient list.
How we rate water resistance →Full ingredient list (39)
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 Butane
Volatile hydrocarbon, flashes off for a light finish
-
2 Water
Solvent base, the water phase
-
Volatile silicone, flashes off for a light finish
- light ← 8 volatile carrier, flashes off
- matte ← 7 volatile carrier, flashes off
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Emollient, softens and smooths skin
- matte ← 2 dry-touch emollient, anti-shine
-
Legacy UV filter (Octinoxate)
- ↑ 17.1 UV protection
- ↑ 11 migrates into eyes with sweat
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Volatile hydrocarbon, flashes off for a light finish
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Legacy UV filter (Octisalate)
- ↑ 7.6 UV protection
- ↑ 6 migrates into eyes with sweat
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Legacy UV filter (Octocrylene), low in the list, likely a minor contributor
- ↑ 12.8 UV protection
- ↓ 10.5 stacked (regulatory/evidence concern)
- ↑ 7 migrates into eyes with sweat
- ↑ 15 co-stains alongside avobenzone
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9 Nylon-12
Mattifying powder, absorbs oil and blurs the finish
- light ← 3 sebum-absorbing powder
- matte ← 3 sebum-absorbing powder
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10 Propane
Volatile hydrocarbon, flashes off for a light finish
-
Volatile silicone, flashes off for a light finish
- light ← 2 volatile carrier, flashes off
- matte ← 2 volatile carrier, flashes off
-
Emulsifier, keeps oil and water blended
- ↑ 14 feeds malassezia
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13 Glycerin
Humectant, pulls water into the skin
- 1 → nourishing the anchor humectant
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Legacy UV filter (Avobenzone), low in the list, likely a minor contributor
- ↑ 18 UV protection, incl. long-UVA (UVA1)
- ↓ 3.5 stacked (regulatory/evidence concern)
- ↑ 3 migrates into eyes with sweat
- ↑ 28 reacts with iron in wash water into rust-yellow stains
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Thickener and texture, structures the gel or cream
-
Preservative, keeps the formula from spoiling
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17 Trehalose
Humectant, pulls water into the skin
- 1 → nourishing humectant
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18 Urea
Humectant, pulls water into the skin
- 1 → nourishing humectant
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Preservative, keeps the formula from spoiling
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Chelator, binds stray metal ions to keep the formula stable
-
Emulsifier, keeps oil and water blended
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22 Citric Acid
pH adjuster
-
Humectant, pulls water into the skin
-
Emollient, softens and smooths skin
- ↑ 1 heavy oil
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Antioxidant, protects the formula and skin
-
Humectant, pulls water into the skin
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27 Serine
Protein, peptide or amino acid, conditions and hydrates skin
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28 Fragrance
Fragrance
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29 Xylitol
Humectant, pulls water into the skin
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30 Glucose
Humectant, pulls water into the skin
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31 Algin
Thickener and texture, structures the gel or cream
-
Preservative, keeps the formula from spoiling
-
pH adjuster
-
Thickener and texture, structures the gel or cream
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35 Pullulan
Supporting ingredient
-
Humectant, pulls water into the skin
- 2 → nourishing hyaluronic family
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Antioxidant, protects the formula and skin
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38 BHT
Antioxidant, protects the formula and skin
-
pH adjuster
Is the Uriage Hyséac Eau Thermale Fluid SPF30 any good?
It scores 49.0/100, the lower end here. Protection is rated weak and it relies on older filters, so it is best as light daily cover rather than primary sun defense.
Can I wear it under makeup?
Yes, it is rated good as a makeup base with a matte, lightweight finish and low white cast, so it should layer well under foundation.
Is the Uriage Hyséac Eau Thermale Fluid SPF30 mineral or chemical?
It is chemical, using an older blend of ethylhexyl methoxycinnamate, ethylhexyl salicylate, octocrylene and avobenzone.