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La Roche-Posay Anthelios UVMune 400 Invisible Fluid SPF50+ bottle
La Roche-Posay

Anthelios UVMune 400 Invisible Fluid SPF50+

Sunscreen 50 ml
9.1OUT OF 10
Great formula

Formula has a high safety profile. Suitable for most skin types.

21
Safe
3
Caution
0
Higher risk

Score breakdown

Safety10/10
Barrier support10/10
Acne-safe9.7/10
Active treatment1.7/10

Our verdict

UVMune 400 is arguably the most technically advanced sunscreen on the mass market, and the reason sits in one ingredient: Mexoryl 400 (methoxypropylamino cyclohexenylidene ethoxyethylcyanoacetate). Ultra-long UVA rays around 380–400nm penetrate deepest and drive pigmentation and photoaging, yet most filters cover them poorly — this is the first widely available filter designed specifically for that gap. Around it sits a genuinely sophisticated filter system: Tinosorb S, Uvinul T150, avobenzone, Mexoryl XL and Mexoryl SX, plus vitamin E as antioxidant support. The texture is the other half of the appeal — a genuinely invisible, weightless fluid with no white cast, which makes it realistic to wear daily and on deeper skin tones. Two caveats worth naming. Alcohol denat sits high in the list, which gives the fast-drying finish but can feel drying or sting on reactive skin. And it contains fragrance, unnecessary in a product for sun-sensitive skin. Note too that these filters are approved in the EU but not the US, so availability varies. If you can get it and tolerate alcohol, it is close to state of the art.

At a glance

What it does
hydrationsoothingbarrier supportexfoliation
Best for
sensitive skinacne-prone skindry and dehydrated skinmost skin types
Not enough for
visible hyperpigmentationactive anti-aging treatment

Key ingredients

Tocopherolprovides antioxidant protection

Full ingredient list (25)

Aqua/water/eauAlcohol DenatTriethyl CitrateDiisopropyl SebacateSilicaEthylhexyl SalicylateBis-Ethylhexyloxyphenol Methoxyphenyl TriazineEthylhexyl TriazoneButyl MethoxydibenzoylmethaneGlycerinPropanediolC12-22 Alkyl Acrylate/hydroxyethylacrylate CopolymerMethoxypropylamino Cyclohexenylidene EthoxyethylcyanoacetatePerliteTocopherolCaprylic/capric TriglycerideAcrylates/c10-30 Alkyl Acrylate CrosspolymerCaprylyl GlycolDiethylamino Hydroxybenzoyl Hexyl BenzoateDrometrizole TrisiloxaneHydroxyethylcelluloseTerephthalylidene Dicamphor Sulfonic AcidTriethanolamineTrisodium Ethylenediamine DisuccinateParfum/fragrance

Colour indicates our safety assessment for each ingredient — green is well-tolerated, amber warrants caution, red is higher-risk. Tap any ingredient to read its full profile.

Frequently asked

What makes Mexoryl 400 different from other sunscreen filters?
It specifically targets ultra-long UVA rays around 380–400nm — the deepest-penetrating part of the UVA spectrum, strongly linked to pigmentation and photoaging. Most conventional filters cover this range poorly, so it closes a real protection gap rather than just adding another filter.
Does it leave a white cast?
No. It uses chemical (organic) filters rather than zinc or titanium dioxide, so it dries down completely invisible. That makes it a strong option for medium and deep skin tones, where mineral sunscreens often leave a grey or ashy cast.
Is the alcohol in it a problem?
It depends on your skin. Alcohol denat sits high in the list and is what gives the fluid its fast-drying, weightless finish, but it can feel drying or sting on dry, reactive or compromised skin. If that describes you, a cream-textured sunscreen may be more comfortable.
What is the score based on?
The score comes from the same Pure Moonlight ingredient analyzer used across the whole site. It weighs safety, barrier support, acne and comedogenic risk, and active-ingredient strength, so this product's score is directly comparable to any ingredient page here.

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