Thinkbaby Zinc Oxide 23.4% Sunscreen SPF 50
66/100 overall score
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About this sunscreen
Thinkbaby SPF 50 is a pure mineral sunscreen with 23.4% zinc oxide as its only UV filter. It has a balanced finish and generally does not sting, but the high zinc load gives a medium white cast and a medium-weight feel, and it is rated poor as a makeup base. Mineral formulas like this commonly suit sensitive skin. Its score of 66.3/100 reflects moderate measured protection, making it a family-friendly mineral choice with some cosmetic trade-offs.
Ingredient & SPF scores
βοΈ
UV protection
Moderate
43
- +41 Zinc Oxide at #1, UV filter (UVA1 +18)
- +2 Label claims (SPF 50)
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Allergens
Low
68
- +100 Starting score
- β18 Fragrance
- β12 Opaque "Fragrance", hidden allergens that can't be checked from the label
- β2 Essential oils (Citrus Paradisi Peel Oil)
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White cast
Medium
35
- +100 Starting score
- β55 Zinc Oxide, 23.4% declared
- β15 Pure mineral formula (23.4% total declared)
- +4.9 Coated minerals (Triethoxycaprylylsilane)
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Eye sting
Low
98
- +100 Starting score
- β8 Fragrance
- +6 Mineral filter system, low-sting filters
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Heavy feel
Medium
58
- +100 Starting score
- β40 Zinc Oxide, 23.4% declared
- β2 Hydrogenated Castor Oil at #20, butter/occlusive fat
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Comedogenic
Low
99
- +100 Starting score
- β1 Olea Europaea Fruit Oil at #15, moderate comedogenic signal
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Fungal acne
High
31
- +100 Starting score
- β18 1 polysorbate/sorbitan emulsifiers that feed Malassezia (Sorbitan Sesquioleate)
- β27 3 oils/butters that feed Malassezia (Helianthus Annuus Seed Oil, Olea Europaea Fruit Oil, Hydrogenated Castor Oil)
- β24 1 long-chain (C12+) esters that feed Malassezia (Polyglyceryl-4 Isostearate)
- +0 Simmondsia Chinensis Seed Oil at #14, jojoba wax ester, fungal-acne exception (not penalized)
- +0 Caprylic/Capric Triglyceride at #3, a safe base that does not feed Malassezia
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Fabric stains
Low
85
- +100 Starting score
- β15 Zinc Oxide at #1, white marks, worst on dark fabric (washable)
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Moisture
Hydrating
LightNourishing
- β 5 Zinc Oxide at #1, mild sebum absorbent
- β 10 Glycerin at #5, the anchor humectant
- β 4 Sodium Hyaluronate at #12, hyaluronic family
- β 3 3 emollient lipids (Helianthus Annuus Seed Oil, Simmondsia Chinensis Seed Oil, Olea Europaea Fruit Oil)
- β 4 Light emollient/solvent (Caprylic/Capric Triglyceride)
β¨
Finish
Balanced
MatteDewy
- β 3 3 emollient lipids (Helianthus Annuus Seed Oil, Simmondsia Chinensis Seed Oil, Olea Europaea Fruit Oil)
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Makeup base
Poor
PillsPrimer
- β 3 Humectant syrup tackiness
- β 15 High mineral load at #1 greys under foundation
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Water resistance
Not resistant
Non-water-resistantWater-resistant
Nothing flagged in the ingredient list.
How we rate water resistance βSkincare extras
Beneficial actives this formula contains. Informational only, not part of the rating: their effect depends on a concentration the label does not disclose.
- β¨ Vitamin E
Full ingredient list (24)
What each ingredient does and how it moves each rating: green helps, red hurts, β / β give the direction, and β / β 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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Mineral UV filter (Zinc Oxide), high in the list, a primary filter
- β 41 UV protection, incl. long-UVA (UVA1)
- β 55 23.4% declared
- β 40 23.4% declared
- β 15 white marks, worst on dark fabric (washable)
- light β 5 mild sebum absorbent
- pills β 15 High mineral load greys under foundation
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2 Water
Solvent base, the water phase
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Emollient, softens and smooths skin
- 4 β nourishing light emollient
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Emulsifier, keeps oil and water blended
- β 24 feeds malassezia
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5 Glycerin
Humectant, pulls water into the skin
- 10 β nourishing the anchor humectant
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Supporting ingredient
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Emollient, softens and smooths skin
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Emollient, softens and smooths skin
-
Emulsifier, keeps oil and water blended
- β 18 feeds malassezia
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Thickener and texture, structures the gel or cream
-
11 Tocopherol
Antioxidant, protects the formula and skin
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Humectant, pulls water into the skin
- 4 β nourishing hyaluronic family
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Botanical extract
- 1 β nourishing emollient lipid
- 1 β dewy emollient lipid
- β 9 feeds malassezia
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Botanical extract
- 1 β nourishing emollient lipid
- 1 β dewy emollient lipid
-
Botanical extract
- β 1 moderate comedogenic signal
- 1 β nourishing emollient lipid
- 1 β dewy emollient lipid
- β 9 feeds malassezia
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Plant oil, an emollient
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Botanical extract
-
Botanical extract
-
Botanical extract
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Plant oil, an emollient
- β 2 butter/occlusive fat
- β 9 feeds malassezia
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Chelator, binds stray metal ions to keep the formula stable
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Supporting ingredient
-
Emollient, softens and smooths skin
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24 Fragrance
Fragrance
Does Thinkbaby SPF 50 leave a white cast?
Yes, white cast is rated medium because of its high 23.4% zinc oxide load. The finish is balanced and it generally does not sting, which suits sensitive skin.
Is the Thinkbaby Zinc Oxide 23.4% Sunscreen SPF 50 mineral or chemical?
It is a pure mineral sunscreen with 23.4% zinc oxide as its only UV filter. Mineral formulas like this commonly suit sensitive skin.
Is this sunscreen any good?
It scores 66.3/100 with moderate measured protection, making it a family-friendly mineral choice with some cosmetic trade-offs like a medium white cast and a poor makeup-base rating.