Cien Sun Protect Milk SPF 50
Works for
Sun protectionSPF 50 · 6 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-agingTocopherolWorks well
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 toneSide benefit · No ingredient credited for this claimWorks well
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).
MoisturizingSide benefit the brand mentions · C12-15 alkyl benzoate, Diisopropyl adipate + 3 moreWorks
“Sun Protect Milk SPF 50”
This product contains good ingredients to attract water to the upper layer of the skin. These ingredients are called "humectants": glycerin.
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).
Can it cause trouble?
Irritancy1 strong irritant: ParfumMedium risk
ComedogenicClean of flagged comedogenic ingredientsNone flagged
User reviews
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Ingredients
Filter by role to see what each ingredient is doing.
Water~45–55%
C12-15 alkyl benzoate~6.1–7.5%
- 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 benzoateDiisopropyl adipate~4.4–5.4%
- Irritation risk
- Low
Helps soften the upper layer of the skin
More about Diisopropyl adipateDiethylamino hydroxybenzoyl hexyl benzoate~3.6–4.4%
- Irritation risk
- Medium
Uvinul A Plus. A new generation broad spectrum sunscreen that offers an effective protection especially in the UVA range. It is stable in formulations. Unfortunately, is not approved by the FDA (US) yet
More about Diethylamino hydroxybenzoyl hexyl benzoateGlycerin~2.5–3.1%
- 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 GlycerinBis-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. Approved by the US FDA in 2026 (listed as bemotrizinol on US labels).
More about Bis-ethylhexyloxyphenol methoxyphenyl triazineButyl methoxydibenzoylmethane~2.1–2.5%
- 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 methoxydibenzoylmethaneDicaprylyl carbonate~1.5–1.8%
- Irritation risk
- Low
Helps products spread more easily and works as an emollient to soften skin
More about Dicaprylyl carbonateEthylhexyl salicylate~1.6–1.9%
- 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 salicylateEthylhexyl triazone~1.3–1.6%
- Irritation risk
- Medium
Uvinul T. A UV filter. Effective against UVB rays. It is photostable. Can increase water resistance properties of the sunscreen. Unfortunately, not approved by the FDA (US) yet
More about Ethylhexyl triazonePotassium cetyl phosphate~0.7–1.05%
- Irritation risk
- Medium
Helps oil and water mix together
More about Potassium cetyl phosphateOryza sativa cera~0.6–0.85%
- Irritation risk
- Low
Phenoxyethanol~0.5–0.75%
- Irritation risk
- Low
A preservative. It helps prevent bacterial growth in cosmetic products
More about PhenoxyethanolStearyl alcohol~0.55–0.85%
- Irritation risk
- Low
An emollient that helps soften the skin
More about Stearyl alcoholPhenylbenzimidazole sulfonic acid~0.55–0.85%
- Irritation risk
- Medium
Ensulizole. A UV filter that is effective against UVB rays. Does not protect against UVA light. It is photostable and can be used to help stabilize other sunscreen ingredients. It is water-soluble meaning that it can help create lighter sunscreen formulations
More about Phenylbenzimidazole sulfonic acidTocopheryl acetate~0.3–0.55%
- 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 acetateXanthan gum~0.25–0.5%
- Irritation risk
- Low
Used to create a thicker product consistency
More about Xanthan gumParfum~0.2–0.35%
- Irritation risk
- High
An aromatic blend of unspecified and possibly irritating ingredients
More about ParfumPotassium hydroxide~0.2–0.35%
Acacia senegal gum~0.15–0.3%
- Irritation risk
- Medium
Helps mask the small of other ingredients and improve the product texture
More about Acacia senegal gumTocopherol~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 TocopherolSclerotium gum~0.1–0.2%
- Irritation risk
- Low
Used to create gel-like formulas and stabilize emulsions
More about Sclerotium gumCaprylhydroxamic acid~0.05–0.1%
Ingredient list view
Water, C12-15 alkyl benzoate, Diisopropyl adipate, Diethylamino hydroxybenzoyl hexyl benzoate, Glycerin, Bis-ethylhexyloxyphenol methoxyphenyl triazine, Butyl methoxydibenzoylmethane, Dicaprylyl carbonate, Ethylhexyl salicylate, Ethylhexyl triazone, Potassium cetyl phosphate, Oryza sativa cera, Phenoxyethanol, Stearyl alcohol, Phenylbenzimidazole sulfonic acid, Tocopheryl acetate, Xanthan gum, Parfum, Potassium hydroxide, Acacia senegal gum, Tocopherol, Sclerotium gum, Caprylhydroxamic acid
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Worth comparing, line by line.
Match % combines shared ingredients, the first five ingredients, shared actives and hero ingredients, irritancy (lower counts in the alternative's favour), texture and body area. Only products in the same routine step are compared.
| CienSun Protect Milk SPF 50YOUR PRODUCT | SunozonSonnenfluid Sensitiv LSF 50 | CeraVeInvisible Hydrating Fluid Sunscreen SPF 50 | RITUALSThe Ritual of Namaste SPF 50 Daily Sun Protection | |
|---|---|---|---|---|
| Match | — | 48% | 47% | 47% |
| Price | — | — | $18.73 | $40.02 |
| Shared key ingredients | — | 5 of 6 | 6 of 6 | 5 of 6 |
| Key difference | — | Sunflower Seed Oil | Niacinamide | Panthenol |
| Irritancy | Medium | Medium | Low | Low |
| SPF | SPF 50 | SPF 50 | SPF 50 | SPF 50 |
| Drying alcohol | — | — | — | Contains drying alcohol |
| View product | Shop | Shop | Shop |
More alternatives: Garnier Ambre Solaire Kids Sensitive Advanced Sun Cream Lotion SPF50+Matas Natur Ansigtssolcreme SPF 30
Product summary
The ingredient list suggests that "Cien - Sun Protect Milk SPF 50" can provide reliable sun protection. It can protect from both UVA and UVB rays. This is great news because 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).
Its formula is also hydrating, so you might not need an additional moistruizer during the day. Like all broad-spectrum sunscreens, this product helps prevent early signs of aging.
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: tinosorb s 2.50% - 3.10%, avobenzone 2.10% - 2.50%, uvinul a plus 3.60% - 4.40% and uvinul t 1.30% - 1.60%.
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 it 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.
About the brand
According to Cruelty-Free Kitty "Cien" is cruelty free and so is its parent company.
Sources cited in this review
Every concentration estimate and effectiveness label is anchored to one of these 3 studies and safety reviews.
- 1
- 2Vitamin E in dermatologyncbi.nlm.nih.gov
- 3Vitamin E and Skin Healthlpi.oregonstate.edu
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