COS-IQ SPF 50 Sunscreen
71/100 overall score
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About this sunscreen
COS-IQ SPF 50 Sunscreen is a chemical-leaning formula combining older filters, ethylhexyl methoxycinnamate, avobenzone and octocrylene, with a touch of zinc oxide. It wears with a dewy finish, low white cast and a lightweight feel, and its low breakout-trigger profile is generally fine for daily use. The filter mix provides broad-spectrum coverage, and the protection here is rated good. With a score of 71.0, it is a respectable mid-range daily sunscreen, especially for those who like a dewy look.
Ingredient & SPF scores
☀️
UV protection
Good
65
- +17.1 Ethylhexyl Methoxycinnamate at #6, UV filter
- +28.5 Butyl Methoxydibenzoylmethane at #7, UV filter (UVA1 +15.2)
- +12.8 Octocrylene at #8, UV filter
- +32.8 Zinc Oxide at #12, UV filter (UVA1 +14.4)
- −3.5 UVB coverage saturated
- −3.1 UVA2 coverage saturated
- ×0.75 Avobenzone + octinoxate degrade each other in sunlight
- +2 Label claims (SPF 50)
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Health safety
Medium
50
- +100 Starting score
- −36 Octinoxate at #6 (regulatory/evidence concern)
- −10.5 Octocrylene at #8, stacked (regulatory/evidence concern)
- −3.5 Avobenzone at #7, stacked (regulatory/evidence concern)
🤧
Allergens
Low
96
- +100 Starting score
- −1 1 declared fragrance allergens
- −3 Photoallergen-tail UV filters (Octocrylene)
🔥
Eye sting
Low
66
- +100 Starting score
- −16 Avobenzone at #7, migrates into eyes with sweat
- −7 Octocrylene at #8, migrates into eyes with sweat
- −11 Octinoxate at #6, migrates into eyes with sweat
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Fungal acne
Low
88
- +100 Starting score
- −12 1 polysorbate/sorbitan emulsifiers that feed Malassezia (Polysorbate 20)
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Fabric stains
High
25
- +100 Starting score
- −45 Avobenzone at #7, 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
- −5 Zinc Oxide at #12, white marks, worst on dark fabric (washable)
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Moisture
Hydrating
LightNourishing
- → 10 Glycerin at #4, the anchor humectant
- → 2 Sodium Hyaluronate at #13, hyaluronic family
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Makeup base
Okay
PillsPrimer
- → 3 Dry-touch esters, smooth fast-absorbing base
- ← 0.5 Gel polymers prone to pilling under friction (Ammonium Acryloyldimethyltaurate/VP Copolymer)
- ← 3 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 →Skincare extras
Beneficial actives this formula contains. Informational only, not part of the rating: their effect depends on a concentration the label does not disclose.
- ✨ Aloe vera
- ✨ Vitamin E
Full ingredient list (22)
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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Soothing, skin-conditioning active
-
Emollient, softens and smooths skin
- 9 → dewy emollient lipid
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4 Glycerin
Humectant, pulls water into the skin
- 10 → nourishing the anchor humectant
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5 Water
Solvent base, the water phase
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Legacy UV filter (Octinoxate)
- ↑ 17.1 UV protection
- ↑ 11 migrates into eyes with sweat
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Legacy UV filter (Avobenzone)
- ↑ 28.5 UV protection, incl. long-UVA (UVA1)
- ↓ 3.5 stacked (regulatory/evidence concern)
- ↑ 16 migrates into eyes with sweat
- ↑ 45 reacts with iron in wash water into rust-yellow stains
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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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Emulsifier, keeps oil and water blended
-
Humectant, pulls water into the skin
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11 Propanediol
Humectant, pulls water into the skin
-
12 Zinc Oxide
Mineral UV filter (Zinc Oxide), low in the list, likely a minor contributor
- ↑ 32.8 UV protection, incl. long-UVA (UVA1)
- ↑ 5 white marks, worst on dark fabric (washable)
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Humectant, pulls water into the skin
- 2 → nourishing hyaluronic family
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Preservative, keeps the formula from spoiling
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Humectant, pulls water into the skin
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16 Tocopherol
Antioxidant, protects the formula and skin
-
Emulsifier, keeps oil and water blended
- ↑ 12 feeds malassezia
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18 Bamboo Water
Solvent base, the water phase
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19 Ammonium
Supporting ingredient
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Chelator, binds stray metal ions to keep the formula stable
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21 Tocopherol
Antioxidant, protects the formula and skin
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Thickener and texture, structures the gel or cream
Is this a mineral or chemical sunscreen?
It is mostly chemical. It combines older filters, ethylhexyl methoxycinnamate, avobenzone and octocrylene, with a touch of zinc oxide.
Does the COS-IQ SPF 50 Sunscreen leave a white cast?
White cast is rated low. It wears with a dewy finish and lightweight feel, so it generally blends in well.
Is the COS-IQ SPF 50 Sunscreen good?
It scores 71.0 out of 100 with protection rated good. It is a respectable mid-range daily sunscreen, especially for those who like a dewy look.