Piz Buin Ultra Light Hydrating Sun Spray SPF10
Works for
1 of 3 advertised claims delivered
Sun protectionSPF 10 · 5 UV filters · Broad spectrumNo real protectionSPF too low
This product does not offer sun protection, or it is very low.
MoisturizingGlycerin, Cetyl alcohol + 6 moreGood evidence
“Ultra Light Hydrating Sun Spray SPF10”
This product contains good ingredients to attract water to the upper layer of the skin. These ingredients are called "humectants": glycerin, butylene glycol.
When humectants are on the surface of the skin, they “pull in” the moisture from the outside environment, or from within deeper layers of the skin. If the air is dry, humectants can speed up the moisture loss from the skin. This is why it is a good idea to use another product on top of this one to help "seal in" the moisture (look for ingredients like dimethicone, squalane, oils and butters).
Anti-agingNo ingredient credited for this claimNo evidence
“Piz Buin Ultra Light Sun Spray SPF10 helps to protect the skin from the sun's rays with its enhanced UVA/UVB filters and it is also enriched with a strong anti-oxidant to prevent the skin ageing prematurely during sun exposure.”
Effective ingredients missing or their concentration is too low.
Can it cause trouble?
Irritancy2 strong irritants: Benzophenone-3, ParfumMedium risk
ComedogenicClean of flagged comedogenic ingredientsNone flagged
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Ingredients
Filter by role to see what each ingredient is doing.
Water~45–55%
C12-15 alkyl benzoate~6.4–7.9%
- Irritation risk
- Low
Enhances the product texture and makes it more spreadable. Helps reduce water loss from the outer layer of skin. Extands the shelf life by preventing bacteria growth
More about C12-15 alkyl benzoateButylene glycol~4.7–5.7%
- Irritation risk
- Low
Used to create a nice product texture and help delivery of other ingredients. Might be somewhat helpful in attracting water to the upper layer of the skin
More about Butylene glycolHomosalate~4–4.9%
- Irritation risk
- Medium
A weak sunscreen that offers some protection against the sun rays that cause sunburn (UVB), but does not offer meaningful protection against protect against the most aging sun rays (UVA). It loses its effectiveness quickly when exposed to sunlight. It is an organic, or so called "chemical" sunscreen. When used in low concentrations, helps to stabilize the product formulation
More about HomosalateVp/hexadecene copolymer~2.6–3.2%
- Irritation risk
- Low
Creates a nice product texture and can support water-resistance of sunscreens
More about Vp/hexadecene copolymerOctocrylene~2.6–3.2%
- Irritation risk
- Medium
A weak sunscreen that protects against the sun rays that cause sunburn (UVB) and is somewhat effective against the UVA rays. It is quite stable and can help stabilize other, more vulnerable, sunscreen ingredients like Avobenzone. It is an organic, or so called "chemical" sunscreen
More about OctocryleneButyl methoxydibenzoylmethane~2.2–2.7%
- Irritation risk
- Medium
Avobenzone. An organic, or so-called "chemical" UV filter. Protects against both UVA and UVB rays. Needs to be combined with other filters in a formulation to be stable.
More about Butyl methoxydibenzoylmethaneGlycerin~1.6–2%
- Irritation risk
- Low
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
More about GlycerinPolyester-7~1.3–1.6%
- Irritation risk
- Low
Caprylyl glycol~1–1.3%
- Irritation risk
- Medium
Helps preserve products and creates a nice product texture
More about Caprylyl glycolBenzophenone-3~1.2–1.4%
- Irritation risk
- High
Same as oxybenzone. Protects in the UVB and short UVA range. In small concentrations, used to stabilize product formulation. Can be irritating. Is shown to be harmful to coral reefs - consider avoiding bathing in coral reef areas when wearing a product with this ingredient. It can penetrate the skin and get absorbed into bloodstream faster than other popular filters available in the US. The study that produced this finding did not address any potential health effects of the absorption
More about Benzophenone-3Bis-ethylhexyloxyphenol methoxyphenyl triazine~0.8–1.2%
- Irritation risk
- Medium
Tinosorb S. One of the most effective broad spectrum sunscreen ingredients. Protects from both UVA and UVB rays. It is photostable. Unfortunately, not approved by FDA (US) yet.
More about Bis-ethylhexyloxyphenol methoxyphenyl triazineTocopheryl acetate~0.5–0.75%
- Irritation risk
- Medium
A more stable but less bio-available form of vitamin E compared to Tocopherol. Might help moisturize and protect the skin from free radicals, but mostly used in low concentrations to stabilize other ingredients.
More about Tocopheryl acetateStyrene/acrylates copolymer~0.5–0.75%
- Irritation risk
- Low
Used to create an even product consistency. Can help boost efficiency of sunscreen filters
More about Styrene/acrylates copolymerAcrylates copolymer~0.45–0.65%
- Irritation risk
- Medium
Used to stabilize product formulation, help create an even product layer over skin (for example, in sunscreen) and create a thicker product consistency
More about Acrylates copolymerGlyceryl stearate~0.5–0.7%
- Irritation risk
- Low
An emollient that softens the skin and forms a protective layer on its surface. Helps water and oil mix together
More about Glyceryl stearateLinseed acid~0.55–0.85%
Neopentyl glycol diheptanoate~0.4–0.6%
- Irritation risk
- Low
Helps soften the upper layer of the skin and create a nice product consistency
More about Neopentyl glycol diheptanoatePeg-100 stearate~0.45–0.7%
- Irritation risk
- Low
Helps oil and water mix togehter and creates a nice product texture
More about Peg-100 stearatePentylene glycol~0.35–0.65%
- Irritation risk
- Medium
Used to preserve products, dissolve other ingredients and create a nice product texture
More about Pentylene glycolCetyl alcohol~0.3–0.6%
- Irritation risk
- Low
A non-drying alcohol that works to soften the skin and stabilize product formulations helping oil and water mix together
More about Cetyl alcoholPotassium cetyl phosphate~0.25–0.5%
- Irritation risk
- Medium
Helps oil and water mix together
More about Potassium cetyl phosphateXanthan gum~0.25–0.45%
- Irritation risk
- Low
Used to create a thicker product consistency
More about Xanthan gumCarbomer~0.2–0.4%
- Irritation risk
- Low
Helps create a thicker or gel-like product texture. It is not a surfactant but can be used in gentle cleansing formulations
More about CarbomerSodium dodecylbenzenesulfonate~0.3–0.55%
- Irritation risk
- Medium
Helps oil and water mix together
More about Sodium dodecylbenzenesulfonateDisodium edta~0.15–0.3%
Sodium hydroxide~0.15–0.3%
Methylparaben~0.15–0.25%
Phenoxyethanol~0.15–0.25%
- Irritation risk
- Low
A preservative. It helps prevent bacterial growth in cosmetic products
More about PhenoxyethanolParfum~0.1–0.15%
- Irritation risk
- High
An aromatic blend of unspecified and possibly irritating ingredients
More about ParfumIngredient list view
Water, C12-15 alkyl benzoate, Butylene glycol, Homosalate, Vp/hexadecene copolymer, Octocrylene, Butyl methoxydibenzoylmethane, Glycerin, Polyester-7, Caprylyl glycol, Benzophenone-3, Bis-ethylhexyloxyphenol methoxyphenyl triazine, Tocopheryl acetate, Styrene/acrylates copolymer, Acrylates copolymer, Glyceryl stearate, Linseed acid, Neopentyl glycol diheptanoate, Peg-100 stearate, Pentylene glycol, Cetyl alcohol, Potassium cetyl phosphate, Xanthan gum, Carbomer, Sodium dodecylbenzenesulfonate, Disodium edta, Sodium hydroxide, Methylparaben, Phenoxyethanol, Parfum
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Product summary
"Piz Buin - Ultra Light Hydrating Sun Spray SPF10" "is a broad spectrum sunscreen meaning that it protects both from UVB rays (" burning "- they cause sunburn) and UVA rays (" aging "- they don't cause sunburn but lead to premature aging and pigmentation issues). However, this product does not offer enough sun protection. We recommend to use a sunscreen with at least SPF 30 daily.
Its formula is also hydrating, so you might not need an additional moistruizer during the day.
Sunscreen filters
This sunscreen uses so-called" chemical ", or organic UV filters (organic simply means that their molecules contain atoms of carbon). These filters typically give good sun protection and rarely leave a white cast, but they can be irritating for sensitive skin. Here are the exact UV filters in this sunscreen: oxybenzone 1.20% - 1.40%, tinosorb s 0.80% - 1.20%, avobenzone 2.20% - 2.70%, homosalate 4.00% - 4.90% and octocrylene 2.60% - 3.20%.
Irritation risk
This formulation includes some common irritants, including ingredients that do not provide a benefit for the skin. We assess the overall irritancy of this sunscreen to be medium. For a detailed overview of all potential irritants: click here
You can see the detailed formula review with the breakdown of all actives in the product and the full ingredient list with estimated concentrations in the tables below.
Price
The product retails for 12.99£ in the United Kingdom.
For a detailed price comparison: click here.
Sources cited in this review
Every concentration estimate and effectiveness label is anchored to one of these 8 studies and safety reviews.
- 1
- 2
- 3
- 4
- 5On Photostability of Oxybenzonecore.ac.uk
- 6
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