Head to head

ISDIN Fotoprotector Fusion Water SPF 50 vs La Roche-Posay Anthelios UVMune 400 Invisible Fluid SPF50+

Same comparison whichever way you searched it: La Roche-Posay Anthelios UVMune 400 Invisible Fluid SPF50+ vs ISDIN Fotoprotector Fusion Water SPF 50.

The bottom line

ISDIN Fotoprotector Fusion Water SPF 50 and La Roche-Posay Anthelios UVMune 400 Invisible Fluid SPF50+ are close on what they deliver, so it comes down to your skin: La Roche-Posay Anthelios UVMune 400 Invisible Fluid SPF50+ is the kinder pick for sensitive or reactive skin since it is fragrance-free.

ISDINFotoprotector Fusion Water SPF 50Sunscreen · ~€24See every ingredient in Fotoprotector Fusion Water SPF 50, decoded
La Roche-PosayAnthelios UVMune 400 Invisible Fluid SPF50+Sunscreen · ~€22See every ingredient in Anthelios UVMune 400 Invisible Fluid SPF50+, decoded

Which should you pick?

Pick Fotoprotector Fusion Water SPF 50 if

  • dark spots, dullness or an uneven tone are your focus
  • fine lines and firmness are the goal

Pick Anthelios UVMune 400 Invisible Fluid SPF50+ if

  • plump, lasting hydration is what you want
  • your skin is sensitive or reacts to fragrance
  • you want the more affordable option

What each delivers

HydrationBarrierBrighteningOil-controlAnti-aging
Fotoprotector Fusion Water SPF 50Anthelios UVMune 400 Invisible Fluid SPF50+
  • Hydration
    810
  • Barrier repair
    77
  • Brightening / tone
    103
  • Oil-control & blemishes
    33
  • Anti-aging
    75

Side by side

Fotoprotector Fusion Water SPF 50Anthelios UVMune 400 Invisible Fluid SPF50+
TypeSunscreenSunscreen
Key activesTinosorb S, Avobenzone, Vitamin C (LAA)Tinosorb S, Avobenzone, Glycerin
TextureFinish varies by batch and region, so check matte-vs-dewy before committing if that matters to you.Finish varies by batch and region, so check matte-vs-dewy before committing if that matters to you.
FragranceContains fragranceNone detected
Fungal-acne safeNot likelyNot likely
PregnancyNo flagged activesNo flagged actives
Ingredients29 listed29 listed
Price~€24~€22

What's in one but not the other

The two labels share 7 of the 51 ingredients between them. The actives are where they part company.

What each one adds acts on The dermis, On top of the skin, The stratum corneum for ISDIN Fotoprotector Fusion Water SPF 50 and The stratum corneum, On top of the skin for La Roche-Posay Anthelios UVMune 400 Invisible Fluid SPF50+. That is the layer each is understood to act on, not how deep it travels.

Only in Fotoprotector Fusion Water SPF 50

Only in Anthelios UVMune 400 Invisible Fluid SPF50+

Where each label stops telling you the dose

Ingredients are listed in order of how much is inside, but only down to 1%. Below that the brand may list them in any order it likes, so the bottom of a label is a set, not a ranking. These two stop being a ranking in very different places.

ISDIN Fotoprotector Fusion Water SPF 50

  1. 1Aqua (Water)
  2. 2Octocrylene
  3. 3Propanediol
  4. 4Butyl Methoxydibenzoylmethane
  5. 5Ethylhexyl Salicylate
  6. 6Polymethyl Methacrylate
  7. 7Dimethicone
  8. 8Phenylbenzimidazole Sulfonic Acid
  9. 9Polysilicone-15
  10. 10Propylene Glycol Dicaprylate/Dicaprate
  11. 11Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine
  12. 12Silica
  13. 13Dimethicone/Vinyl Dimethicone Crosspolymer
  14. 141,2-Hexanediol
  15. 15Hydroxyacetophenone
  16. 16Polysorbate 60
  17. 17PEG-10 Dimethicone
  18. 18Sodium Hyaluronate
  19. 19Tocopheryl Acetate
  20. 20Xanthan Gum
  21. 21Caprylyl Glycol
  22. 22Parfum (Fragrance)
  23. 23Disodium EDTA
  24. 24PEG-8
  25. 25Tocopherol
  26. 26Tropolone
  27. 27Ascorbyl Palmitate
  28. 28Ascorbic Acid
  29. 29Citric Acid

10 of 29 sit below the line, marked by Xanthan Gum.

La Roche-Posay Anthelios UVMune 400 Invisible Fluid SPF50+

  1. 1Aqua/Water/Eau
  2. 2Alcohol Denat.
  3. 3Silica
  4. 4Diisopropyl Sebacate
  5. 5Dicaprylyl Carbonate
  6. 6Ethylhexyl Triazone
  7. 7Butyl Methoxydibenzoylmethane
  8. 8Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine
  9. 9Diisopropyl Adipate
  10. 10Glycerin
  11. 11Isopropyl Myristate
  12. 12Propanediol
  13. 13C12-22 Alkyl Acrylate/Hydroxyethylacrylate Copolymer
  14. 14Diethylamino Hydroxybenzoyl Hexyl Benzoate
  15. 15C12-15 Alkyl Benzoate
  16. 16Tocopherol
  17. 17Methoxypropylamino Cyclohexenylidene Ethoxyethylcyanoacetate
  18. 18Perlite
  19. 19Drometrizole Trisiloxane
  20. 20Acrylates/C10-30 Alkyl Acrylate Crosspolymer
  21. 21Citric Acid
  22. 22Disodium Phosphate
  23. 23Hydroxyethylcellulose
  24. 24Pentylene Glycol
  25. 25Polysorbate 60
  26. 26Sodium Phosphate
  27. 27Terephthalylidene Dicamphor Sulfonic Acid
  28. 28Triethanolamine
  29. 29Trisodium Ethylenediamine Disuccinate

14 of 29 sit below the line, marked by Tocopherol.

Below the line is not too little to work: ceramides, retinoids and peptides all act far under a percent. It means the position stops carrying information. Where the line falls is inferred from the first ingredient whose whole job is done at a fraction of a percent, so it is a close read of the label rather than a number from the formula sheet.

The molecule doing the work

Fotoprotector Fusion Water SPF 50Tinosorb S
Anthelios UVMune 400 Invisible Fluid SPF50+Tinosorb S

Better for…

  • Dark spots & uneven toneFotoprotector Fusion Water SPF 50
  • Fine lines & firmnessFotoprotector Fusion Water SPF 50
  • Dryness & dehydrationAnthelios UVMune 400 Invisible Fluid SPF50+
  • Sensitive, reactive skinAnthelios UVMune 400 Invisible Fluid SPF50+

La Roche-Posay Anthelios UVMune 400 Invisible Fluid SPF50+ is the cheaper of the two (~€22 vs ~€24).

Ready to pick one?

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Common questions

Is ISDIN Fotoprotector Fusion Water SPF 50 or La Roche-Posay Anthelios UVMune 400 Invisible Fluid SPF50+ better for dark spots & uneven tone?

For dark spots & uneven tone, ISDIN Fotoprotector Fusion Water SPF 50 is the stronger pick by our read of the two formulas. ISDIN Fotoprotector Fusion Water SPF 50 and La Roche-Posay Anthelios UVMune 400 Invisible Fluid SPF50+ are close on what they deliver, so it comes down to your skin: La Roche-Posay Anthelios UVMune 400 Invisible Fluid SPF50+ is the kinder pick for sensitive or reactive skin since it is fragrance-free.

Which is cheaper, ISDIN Fotoprotector Fusion Water SPF 50 or La Roche-Posay Anthelios UVMune 400 Invisible Fluid SPF50+?

La Roche-Posay Anthelios UVMune 400 Invisible Fluid SPF50+ is the cheaper of the two (~€22 vs ~€24).

Can I use ISDIN Fotoprotector Fusion Water SPF 50 and La Roche-Posay Anthelios UVMune 400 Invisible Fluid SPF50+ together?

They are both sunscreens, so you would normally pick one rather than layer both in the same step. You can keep both and alternate them (morning and night, or on different days) if you like variety, but you do not need two.

What the scene shows

The cross-section at the top of this page is not decoration and not a diagram of the skin in general: it places the molecules these two are sold on at the layer each is understood to act on. ISDIN Fotoprotector Fusion Water SPF 50 is placed by Tinosorb S (on top of the skin), Avobenzone (on top of the skin), Vitamin C (LAA) (the dermis). La Roche-Posay Anthelios UVMune 400 Invisible Fluid SPF50+ is placed by Tinosorb S (on top of the skin), Avobenzone (on top of the skin), Glycerin (the stratum corneum). A layer is where an ingredient does its work, never how deep it travels, and never a claim about how well it works.

Back up to the scene

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