Earth Rhythm Ultra Defence Mineral Sun Fluid - Spf 50
76/100 overall score
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About this sunscreen
Earth Rhythm Ultra Defence Mineral Sun Fluid is an SPF 50 pure mineral sunscreen using Zinc Oxide and Titanium Dioxide in a fluid texture. It wears with a balanced finish and a low white cast for a mineral formula, while staying lightweight and non-stinging with low pore-clogging risk. It works okay under makeup. With moderate protection and a score of 76.2/100, it is a good fluid mineral choice for sensitive skin.
Ingredient & SPF scores
☀️
UV protection
Moderate
42
- +24.6 Zinc Oxide at #13, UV filter (UVA1 +10.8)
- +19.8 Titanium Dioxide at #14, UV filter (UVA1 +3)
- ×0.9 Limited long-UVA1 coverage
- +2 Label claims (SPF 50)
👻
White cast
Low
82
- +100 Starting score
- −5 Zinc Oxide at #13
- −3 Titanium Dioxide at #14 (nano)
- −10 Zinc Oxide + Titanium Dioxide together
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Heavy feel
Low
95
- +100 Starting score
- −3 Zinc Oxide at #13
- −2 Titanium Dioxide at #14
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Fungal acne
Low
81
- +100 Starting score
- −14 1 oils/butters that feed Malassezia (Lecithin)
- −5 1 ubiquitous fatty ingredients (Cetearyl Glucoside), weak Malassezia signal
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Fabric stains
Low
93
- +100 Starting score
- −2 Zinc Oxide at #13, white marks, worst on dark fabric (washable)
- −5 Both minerals present, heavier deposit
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Moisture
Hydrating
LightNourishing
- → 16 Glycerin at #3, the anchor humectant
- → 1 Light emollient/solvent (Caprylic/Capric Triglyceride)
- → 0.5 1 fatty-alcohol emollients (Cetearyl Alcohol)
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Makeup base
Okay
PillsPrimer
- ← 4 Gel polymers prone to pilling under friction (Sodium Acrylates Copolymer)
- ← 7 Humectant syrup tackiness
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Water resistance
Not resistant
Non-water-resistantWater-resistant
Nothing flagged in the ingredient list.
How we rate water resistance →Full ingredient list (18)
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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Solvent base, the water phase
-
3 Glycerin
Humectant, pulls water into the skin
- 16 → nourishing the anchor humectant
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4 Water
Solvent base, the water phase
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Botanical extract
-
Supporting ingredient
-
Botanical extract
-
Fatty alcohol, an emollient and thickener, not the drying kind
- 0.5 → nourishing fatty-alcohol emollient
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Emulsifier, keeps oil and water blended
- ↑ 5 minor malassezia feeder
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Emollient, softens and smooths skin
- 1 → nourishing light emollient
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Thickener and texture, structures the gel or cream
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12 Lecithin
Emulsifier, keeps oil and water blended
- ↑ 14 feeds malassezia
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13 Zinc Oxide
Mineral UV filter (Zinc Oxide), low in the list, likely a minor contributor
- ↑ 24.6 UV protection, incl. long-UVA (UVA1)
- ↑ 2 white marks, worst on dark fabric (washable)
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Mineral UV filter (Titanium Dioxide), low in the list, likely a minor contributor
- ↑ 19.8 UV protection, incl. long-UVA (UVA1)
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Emulsifier, keeps oil and water blended
-
Preservative, keeps the formula from spoiling
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17 Glycerin
Humectant, pulls water into the skin
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18 Sorbic Acid
Preservative, keeps the formula from spoiling
Does Earth Rhythm Mineral Sun Fluid leave a white cast?
No, white cast is low for a mineral formula. The fluid texture with Zinc Oxide and Titanium Dioxide is tuned to blend cleanly on most skin tones.
Is the Earth Rhythm Ultra Defence Mineral Sun Fluid - Spf 50 mineral or chemical?
It is a pure mineral sunscreen, using Zinc Oxide and Titanium Dioxide, which commonly suits sensitive skin.
What SPF is it?
It is SPF 50, offering moderate broad-spectrum protection in a lightweight fluid.