Piz Buin Moisturising Sun Lotion SPF 50+
Works for
1 of 1 advertised claim delivered
Sun protectionSPF 50 · 4 UV filtersBroad spectrum
This product offers a good level of protection against both UVB and UVA rays.
This sunscreen uses organic (so-called "chemical") sunscreen filters. Organic, or "chemical" filters usually provide reliable sun protection and rarely leave a white cast. Sunscreens with organic filters can sting eyes.
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.
Anti-agingNot advertised by the brand · No ingredient credited for this claimStrong support
This product can help prevent early signs of skin aging because it offers a good level of broad spectrum sun protection. Sun damage is the main cause of premature skin aging, and protecting your skin from the sun is the best anti-aging strategy.
Evens skin toneNot advertised by the brand · No ingredient credited for this claimStrong support
This product offers broad spectrum sun protection. It means that it can prevent hyperpigmentation and help keep the skin tone even (sun damage is the main factor causing age spots, darkening of post-acne marks and other discolorations).
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%
Octocrylene~5.8–7.1%
- 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 OctocryleneC12-15 alkyl benzoate~4.2–5.1%
- 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 benzoateEthylhexyl salicylate~3.5–4.3%
- 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 salicylateButyl methoxydibenzoylmethane~3.1–3.8%
- 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 methoxydibenzoylmethaneBis-ethylhexyloxyphenol methoxyphenyl triazine~2.5–3.1%
- 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 triazineStyrene/acrylates copolymer~1.5–1.9%
- Irritation risk
- Low
Used to create an even product consistency. Can help boost efficiency of sunscreen filters
More about Styrene/acrylates copolymerButylene glycol~1.4–1.8%
- 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 glycolIsopropyl isostearate~1.2–1.5%
- Irritation risk
- Low
- Comedogenicity
- 3/5
An emollient that helps soften the skin
More about Isopropyl isostearateTriacontanyl pvp~1–1.2%
- Irritation risk
- Low
Glyceryl stearate~0.75–1.1%
- 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 stearatePeg-100 stearate~0.65–0.95%
- Irritation risk
- Low
Helps oil and water mix togehter and creates a nice product texture
More about Peg-100 stearateAluminum starch octenylsuccinate~0.5–0.75%
- Irritation risk
- Medium
Used to thicken the product's consistency
More about Aluminum starch octenylsuccinateLinseed acid~0.6–0.9%
Potassium acrylate crosspolymer~0.45–0.7%
- Irritation risk
- Low
Tribehenin~0.45–0.65%
- Irritation risk
- Low
Used to create a thicker product consistency and soften the upper layer of the skin
More about TribeheninCaprylyl glycol~0.45–0.65%
- Irritation risk
- Medium
Helps preserve products and creates a nice product texture
More about Caprylyl glycolPotassium cetyl phosphate~0.35–0.65%
- Irritation risk
- Medium
Helps oil and water mix together
More about Potassium cetyl phosphatePeg-8 laurate~0.3–0.5%
Sodium dodecylbenzenesulfonate~0.3–0.6%
- Irritation risk
- Medium
Helps oil and water mix together
More about Sodium dodecylbenzenesulfonateAcrylates/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 crosspolymerDisodium edta~0.2–0.35%
Sodium hydroxide~0.15–0.3%
Pentaerythrityl tetra-di-t-butyl hydroxyhydrocinnamate~0.15–0.3%
- Irritation risk
- Low
Used to increase stability of product formulations
More about Pentaerythrityl tetra-di-t-butyl hydroxyhydrocinnamateTocopheryl acetate~0.15–0.25%
- 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 acetatePhenoxyethanol~0.1–0.25%
- Irritation risk
- Low
A preservative. It helps prevent bacterial growth in cosmetic products
More about PhenoxyethanolPotassium 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, Octocrylene, C12-15 alkyl benzoate, Ethylhexyl salicylate, Butyl methoxydibenzoylmethane, Bis-ethylhexyloxyphenol methoxyphenyl triazine, Styrene/acrylates copolymer, Butylene glycol, Isopropyl isostearate, Triacontanyl pvp, Glyceryl stearate, Peg-100 stearate, Aluminum starch octenylsuccinate, Linseed acid, Potassium acrylate crosspolymer, Tribehenin, Caprylyl glycol, Potassium cetyl phosphate, Peg-8 laurate, Sodium dodecylbenzenesulfonate, Acrylates/c10-30 alkyl acrylate crosspolymer, Disodium edta, Sodium hydroxide, Pentaerythrityl tetra-di-t-butyl hydroxyhydrocinnamate, Tocopheryl acetate, Phenoxyethanol, Potassium sorbate, Parfum
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Product summary
Based on the ingredient list, we assess that "Piz Buin - Moisturising Sun Lotion SPF 50+" can provide reliable sun protection. We love that it can protect from both UVA and UVB rays (not all sunscreens with SPF ratings give UVA protection. UVA rays do not cause sunburn, but still damage our skin and lead to early aging).
Like all broad-spectrum sunscreens, this product has an anti-aging benefit.
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. Here are the exact UV filters in this sunscreen: tinosorb s 2.50% - 3.10%, avobenzone 3.10% - 3.80%, octisalate 3.50% - 4.30% and octocrylene 5.80% - 7.10%.
Irritation risk
This moisturizer contains some common irritants, including those without a benefit for the skin. We assess the overall irritancy of this moisturizer 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 7.00£ 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 2 studies and safety reviews.
- 1
- 2
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