Boots Soltan Soltan Once Spray SPF 50+
80/100 overall score
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About this sunscreen
Boots Soltan Once Spray SPF 50+ is a hybrid spray combining Octocrylene, Avobenzone, and Ethylhexyl Salicylate with modern filters Tinosorb S, Tinosorb M, and Diethylhexyl Butamido Triazone. It has a dewy finish, stays lightweight, and leaves a low white cast, though the spray may sting somewhat near the eyes. It is low on the pore-clogging scale with okay makeup compatibility. Protection rates excellent and the overall score is 79.5/100, an easy-to-apply body option.
Ingredient & SPF scores
☀️
UV protection
Excellent
96
- +16 Octocrylene at #3, UV filter
- +28.5 Butyl Methoxydibenzoylmethane at #4, UV filter (UVA1 +15.2)
- +7.6 Ethylhexyl Salicylate at #6, UV filter
- +38.4 Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine at #10, UV filter (UVA1 +12.8)
- +28.8 Methylene Bis-Benzotriazolyl Tetramethylbutylphenol at #13, UV filter (UVA1 +10.8)
- +14.4 Diethylhexyl Butamido Triazone at #16, UV filter
- −22.4 UVB coverage saturated
- −17.5 UVA2 coverage saturated
- +2 Label claims (SPF 50)
☢️
Health safety
High
67
- +100 Starting score
- −30 Octocrylene at #3 (regulatory/evidence concern)
- −3.5 Avobenzone at #4, 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
48
- +100 Starting score
- −16 Avobenzone at #4, migrates into eyes with sweat
- −22 Octocrylene at #3, migrates into eyes with sweat
- −6 Octisalate at #6, migrates into eyes with sweat
- −8 Fragrance
🍄
Fungal acne
Low
77
- +100 Starting score
- −9 1 oils/butters that feed Malassezia (Vitis Vinifera Seed Oil)
- −14 1 long-chain (C12+) esters that feed Malassezia (Polyglyceryl-3 Methylglucose Distearate)
👕
Fabric stains
High
30
- +100 Starting score
- −45 Avobenzone at #4, reacts with iron in wash water into rust-yellow stains
- −15 Octocrylene at #3, co-stains alongside avobenzone
- −10 Avobenzone + Octocrylene, the classic staining pair
💧
Moisture
Balanced
LightNourishing
- → 1 Glycerin at #30, the anchor humectant
- → 1 Humectant polyols
- → 1 1 emollient lipids (Vitis Vinifera Seed Oil)
✨
Finish
Dewy
MatteDewy
- → 10 2 emollient lipids (Vitis Vinifera Seed Oil, C12-15 Alkyl Benzoate)
💄
Makeup base
Okay
PillsPrimer
- → 1 Primer-style base, volatile silicones and dimethicone slip
- → 3 Dry-touch esters, smooth fast-absorbing base
- ← 0.5 Gel polymers prone to pilling under friction (Acrylates/C10-30 Alkyl Acrylate Crosspolymer)
- ← 2 Occlusives/waxes float the foundation
🌊
Water resistance
Not resistant
Non-water-resistantWater-resistant
- +7 1 film-forming polymers that lock the formula on for water resistance
- +4 1 water-locking waxes
Full ingredient list (37)
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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Emollient, softens and smooths skin
- 9 → dewy emollient lipid
-
Legacy UV filter (Octocrylene), high in the list, a primary filter
- ↑ 16 UV protection
- ↑ 22 migrates into eyes with sweat
- ↑ 15 co-stains alongside avobenzone
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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
-
Humectant, pulls water into the skin
- 1 → nourishing humectant polyol
-
Legacy UV filter (Octisalate)
- ↑ 7.6 UV protection
- ↑ 6 migrates into eyes with sweat
-
Film former, locks the formula onto skin for water resistance
-
Emollient, softens and smooths skin
-
Emulsifier, keeps oil and water blended
- ↑ 14 feeds malassezia
-
Modern UV filter, broad-spectrum and photostable (Tinosorb S), low in the list, likely a minor contributor
- ↑ 38.4 UV protection, incl. long-UVA (UVA1)
-
Thickener and texture, structures the gel or cream
- ↑ 7 film former
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12 Tribehenin
Emollient, softens and smooths skin
- ↑ 6 wax film
- ↑ 4 wax water lock
-
Modern UV filter, broad-spectrum and photostable (Tinosorb M), low in the list, likely a minor contributor
- ↑ 28.8 UV protection, incl. long-UVA (UVA1)
-
Emollient, softens and smooths skin
-
Preservative, keeps the formula from spoiling
-
Modern UV filter, broad-spectrum and photostable (Iscotrizinol), low in the list, likely a minor contributor
- ↑ 14.4 UV protection
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Emulsifier, keeps oil and water blended
-
18 Dimethiconol
Emollient, softens and smooths skin
-
19 Fragrance
Fragrance
-
Preservative, keeps the formula from spoiling
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Preservative, keeps the formula from spoiling
-
Humectant, pulls water into the skin
-
Emollient, softens and smooths skin
-
24 Ethylparaben
Preservative, keeps the formula from spoiling
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Emulsifier, keeps oil and water blended
-
Humectant, pulls water into the skin
-
Botanical extract
- 1 → nourishing emollient lipid
- 1 → dewy emollient lipid
- ↑ 9 feeds malassezia
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Antioxidant, protects the formula and skin
-
Thickener and texture, structures the gel or cream
-
30 Glycerin
Humectant, pulls water into the skin
- 1 → nourishing the anchor humectant
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Chelator, binds stray metal ions to keep the formula stable
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32 Hydroxide K
pH adjuster
-
Humectant, pulls water into the skin
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Antioxidant, protects the formula and skin
-
Botanical extract
-
Humectant, pulls water into the skin
-
37 Xanthan Gum
Thickener and texture, structures the gel or cream
Is the Boots Soltan Once Spray mineral or chemical?
It is a hybrid formula, blending Octocrylene and Avobenzone with modern filters Tinosorb S, Tinosorb M, and Diethylhexyl Butamido Triazone.
Does the Boots Soltan Soltan Once Spray SPF 50+ leave a white cast?
No, it is rated low for white cast and wears with a dewy, lightweight finish. The spray may sting somewhat if it reaches the eyes.
Is it any good?
Yes. It scores 79.5/100 with an excellent protection rating at SPF 50+, and the spray format makes it easy to apply on the body.