Piz Buin Moisturising Sun Lotion SPF10
Works for
1 of 2 advertised claims delivered
Sun protectionSPF 10 · 4 UV filters · Broad spectrumNo real protectionSPF too low
This product does not offer sun protection, or it is very low.
This product can be considered "reef safe" because it does not contain the UV filters (oxybenzone and octinoxate) that can be harmful to coral reefs when present in the water in high concentrations.
Moisturizing9 ingredients credited for this claimGood support
“Moisturising Sun Lotion SPF10”
This product can help improve hydration of the skin with the two types of ingredients.
The first type is called “humectants”:
these ingredients help attract water.
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. The following ingredients in this product do the job:
glycerin, butylene glycol.
This product also contains ingredients called “occlusives”. They help reduce the speed with which our skin loses moisture to the outside environment. These ingredients also help soften the upper layer of the skin, so it feels less tight and nicer to the touch. The following ingredients in this product do the job: dimethicone, c12-15 alkyl benzoate.
Can it cause trouble?
Irritancy1 strong irritant: ParfumMedium risk
Comedogenic1 ingredient rated 2 or more on the 0–5 pore-clogging scale1 flagged
User reviews
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Ingredients
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Water~45–55%
Ethylhexyl salicylate~5.8–7.1%
- Irritation risk
- Low
Octisalate. A UV filter. It offers some protection against the sun rays that cause sunburn (UVB), but does not 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
More about Ethylhexyl salicylateC12-15 alkyl benzoate~4.4–5.4%
- 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 benzoateOctocrylene~3.6–4.4%
- 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 OctocryleneGlycerin~2.4–2.9%
- 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 GlycerinDicaprylyl carbonate~1.9–2.4%
- Irritation risk
- Low
Helps products spread more easily and works as an emollient to soften skin
More about Dicaprylyl carbonateVp/eicosene copolymer~1.6–2%
- Irritation risk
- Medium
Used to improve the product adherence to the skin, for example, to pro-long the protective effect of sunscreens. Can be irritating to very sensitive skin
More about Vp/eicosene copolymerButylene glycol~1.4–1.7%
- 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 glycolButyl methoxydibenzoylmethane~1.6–2%
- 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 methoxydibenzoylmethaneDimethicone~1–1.2%
- Irritation risk
- Low
A silicone that helps to reduce water loss from the surface of the skin. Can temporarily "fill in" lines and wrinkles, absorb oil, and create a nice product finish
More about DimethiconeMethylene bis-benzotriazolyl tetramethylbutylphenol~1–1.2%
- Irritation risk
- Medium
Tinosorb M. A UV filter. Is effective against both UVA and UVB rays. It also provides some protection against visible light. It is photostable and can also be used to improve photostability of other sunscreen ingredients. Its physical properties help to create lightweight sunscreen formulations. It can leave a slight white cast. Unfortunately, it is not approved by the FDA (US) yet
More about Methylene bis-benzotriazolyl tetramethylbutylphenolCetearyl alcohol~0.65–1%
- Irritation risk
- Low
- Comedogenicity
- 2/5
A non-drying alcohol. Works as an emollient. Helps water and oil mix together and creates a nice product texture
More about Cetearyl alcoholPpg-5-ceteth-20~0.55–0.8%
- Irritation risk
- Medium
A solvent with some emollient properties
More about Ppg-5-ceteth-20Tocopheryl acetate~0.45–0.7%
- 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 acetateCaprylyl glycol~0.45–0.7%
- Irritation risk
- Medium
Helps preserve products and creates a nice product texture
More about Caprylyl glycolChrysanthemum parthenium flower extract~0.4–0.6%
- Irritation risk
- Low
Pentylene glycol~0.45–0.7%
- Irritation risk
- Medium
Used to preserve products, dissolve other ingredients and create a nice product texture
More about Pentylene glycolPotassium lactate~0.3–0.6%
- Irritation risk
- Low
Propylene glycol~0.3–0.55%
- Irritation risk
- High
Helps oil and water mix together and can enhance the penetration of other ingredients into the skin. It can be irritating
More about Propylene glycolDicetyl phosphate~0.3–0.55%
Ceteth-10 phosphate~0.35–0.6%
Decyl glucoside~0.3–0.6%
- Irritation risk
- High
Helps oil and water mix together. Can be irritating
More about Decyl glucosideAcrylates/c10-30 alkyl acrylate crosspolymer~0.2–0.4%
- Irritation risk
- Medium
Maintains the texture of skincare products. Allows the product to spread evenly. Helps oil and water mix together
More about Acrylates/c10-30 alkyl acrylate crosspolymerAcrylates/c12-22 alkyl methacrylate copolymer~0.2–0.4%
- Irritation risk
- Low
Xanthan gum~0.2–0.4%
- Irritation risk
- Low
Used to create a thicker product consistency
More about Xanthan gumDisodium edta~0.2–0.35%
Sodium hydroxide~0.15–0.3%
Bht~0.15–0.25%
Tocopherol~0.15–0.25%
- Irritation risk
- Low
Pure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself
More about TocopherolPotassium sorbate~0.1–0.2%
Parfum~0.05–0.1%
- Irritation risk
- High
An aromatic blend of unspecified and possibly irritating ingredients
More about ParfumIngredient list view
Water, Ethylhexyl salicylate, C12-15 alkyl benzoate, Octocrylene, Glycerin, Dicaprylyl carbonate, Vp/eicosene copolymer, Butylene glycol, Butyl methoxydibenzoylmethane, Dimethicone, Methylene bis-benzotriazolyl tetramethylbutylphenol, Cetearyl alcohol, Ppg-5-ceteth-20, Tocopheryl acetate, Caprylyl glycol, Chrysanthemum parthenium flower extract, Pentylene glycol, Potassium lactate, Propylene glycol, Dicetyl phosphate, Ceteth-10 phosphate, Decyl glucoside, Acrylates/c10-30 alkyl acrylate crosspolymer, Acrylates/c12-22 alkyl methacrylate copolymer, Xanthan gum, Disodium edta, Sodium hydroxide, Bht, Tocopherol, Potassium sorbate, Parfum
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Product summary
"Piz Buin - Moisturising Sun Lotion SPF10" offers broad spectrum protection. It means that it protects from both UVA and UVB rays (you can remember UVB as "burning" sunlight - they cause sunburn. You can remember UVA rays as "aging" - they do not lead to sunburn, but they cause photodamage and contribute to early signs of skin aging and hyperpigmentation). On the negative side, the SPF of this sunscreen is not high enough. We recommend to use a sunscreen with at least SPF 30 daily.
As a plus, this sunscreen uses some of the new generation UV filters (Tinosorb M). These filters are more stable and more gentle on the skin.
Its formula is also hydrating, so you might not need an additional moistruizer during the day.
Sunscreen filters
This is a so-called "chemical" sunscreen. It means that it uses organic UV filters. They typically offer good sun protection and rarely leave a white cast, but they can be irritating for some people with sensitive skin. The UV filters in this sunscreen are: avobenzone 1.60% - 2.00%, octisalate 5.80% - 7.10%, tinosorb m 1.00% - 1.20% and octocrylene 3.60% - 4.40%.
Irritation risk
This sunscreen contains some common irritants, including those without a benefit for the skin. We assess the overall irritancy of this product 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 9.99£ 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 10 studies and safety reviews.
- 1
- 2
- 3
- 4Final Report on the Safety Assessment of Dimethicone Copolyoljournals.sagepub.com
- 5Surfactants and experimental irritant contact dermatitisncbi.nlm.nih.gov
- 6Propylene Glycolpubmed.ncbi.nlm.nih.gov
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