ISDIN Fotoprotector Fusion Water SPF 50 On your shelf ✓
Our read, in one look
Tinosorb S is the reason to consider this sunscreen, with Avobenzone behind it.
The case for it
- Tinosorb S, strong evidence for broad spectrum uv protection
- Avobenzone, strong evidence for UVA1 protection
- No alcohol or parabens
Mind this
- A morning step, under sunscreen
- Add it on its own for a week or two, so you know what your skin is answering to
Maya's readISDIN Fotoprotector Fusion Water SPF 50 is a sunscreen built around Tinosorb S, Avobenzone and Vitamin C (LAA). It leans strongest on hydration, barrier repair, brightening / tone. Best suited to sensitive, normal and oily skin. Worth noting it contains fragrance, so reactive skin should patch-test.
Skip it if your skin reacts to fragrance: this one is scented.
The formula, drawn
Every ingredient in label order, coloured by the job it does here.
19 of the 29 sit above the 1% line. The other 10, hatched, are each under 1%. Widths show the ORDER on the label and nothing else: the label never discloses amounts, so we never draw them.
- Actives & signals
- Hydrators
- Texture & base
- Preservation
- Not in our library yet
What it delivers
How it feels Finish varies by batch and region, so check matte-vs-dewy before committing if that matters to you. (estimated from the formula)
What's in it that matters
Highly photostable, oil-soluble organic filter that provides strong UVA and UVB protection and stabilizes less stable filters in blends.
Widely used UVA1 filter that needs stabilizing partners to remain photostable but is key for modern broad-spectrum sunscreens.
Potent antioxidant and brightening acid form of vitamin C; very effective at low pH but can be irritating on sensitive skin.
UVB filter that also acts as a photostabilizer for avobenzone, improving SPF and filter stability but with some sensitization concerns.
Water-binding molecule that increases hydration; works best under occlusive/emollient layers to reduce evaporation.
Salicylate UVB filter that helps boost SPF and improve texture, usually paired with UVA filters for broad-spectrum coverage.
How to use it
In the morning, under sunscreen: vitamin C pairs well with SPF and helps defend against daytime damage.
Where it acts
The same cross-section as our 500 dalton page, with this formula's actives on the layer each one works on. Depth is the anatomy's, never an ingredient's.
Skin surface
On top of the skin
- Avobenzonederived from what it is
- Octisalatederived from what it is
- Octocrylenederived from what it is
- Tinosorb Sderived from what it is
The stratum corneum
- Hyaluronic acidderived from what it is
The dermis
- Vitamin C (LAA)likely, sourced
6 of this product's actives have a layer we can defend.
Sources for the sourced ones: Pullar et al. 2017: the roles of vitamin C in skin health.
Against the average sunscreen
It scores higher than the median sunscreen on brightening.
It gives up ground on hydration.
A median, not an average: one unusual formula should not move the middle. The numbers are the same 0 to 10 reads the comparison pages use.
The full ingredients list, decoded
Every ingredient on the label, in the order it appears (highest amount first). We link the 21 our library knows, name what each one does, and flag anything that can irritate or clog. The rest we leave plain, nothing is hidden.
All 29 ingredients, decoded
- Aqua (Water)Solvent (base)
- OctocryleneUv filtermild irritant
- PropanediolHumectant
- Butyl MethoxydibenzoylmethaneUv filtermild irritant
- Ethylhexyl SalicylateUv filter
- Polymethyl MethacrylateThickener
- DimethiconeOcclusive
- Phenylbenzimidazole Sulfonic Acid
- Polysilicone-15
- Propylene Glycol Dicaprylate/DicaprateHumectant / solvent
- SilicaAbsorbent
- 1,2-HexanediolPreservative booster
- HydroxyacetophenoneAntioxidant
- Polysorbate 60Emulsifier
- PEG-10 DimethiconeEmulsifier
- Sodium HyaluronateHumectant
- Tocopheryl AcetateAntioxidant
- roughly the 1% lineThe rules only require descending order above 1%. From Xanthan Gum down, these 10 can be listed in any order the brand likes, so position stops telling you anything.
- Xanthan GumThickener
- Caprylyl GlycolPreservative booster
- Parfum (Fragrance)Fragrancecan irritate
- Disodium EDTAChelator
- PEG-8Emulsifier
- TocopherolAntioxidantmild irritant
- Tropolone
- Ascorbyl PalmitateVitamin c derivative
- Ascorbic AcidVitaminmild irritant
- Citric AcidExfoliantmild irritant
Copy the raw INCI list
Aqua (Water), Octocrylene, Propanediol, Butyl Methoxydibenzoylmethane, Ethylhexyl Salicylate, Polymethyl Methacrylate, Dimethicone, Phenylbenzimidazole Sulfonic Acid, Polysilicone-15, Propylene Glycol Dicaprylate/Dicaprate, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Silica, Dimethicone/Vinyl Dimethicone Crosspolymer, 1,2-Hexanediol, Hydroxyacetophenone, Polysorbate 60, PEG-10 Dimethicone, Sodium Hyaluronate, Tocopheryl Acetate, Xanthan Gum, Caprylyl Glycol, Parfum (Fragrance), Disodium EDTA, PEG-8, Tocopherol, Tropolone, Ascorbyl Palmitate, Ascorbic Acid, Citric Acid
Worried about clogged pores specifically? The pore-clogging checker reads this same list against the published comedogenic ratings.
Read enough? Find it on amazon.com →
We don't make or sell skincare of our own. So there's nothing here we're trying to push, just an honest read of whether this formula suits your skin.
Against your shelf
Read from your own shelf, in your browser. We never see it.
Compare it with…
All 7 comparisons
- Fotoprotector Fusion Water SPF 50 vs Neutrogena Hydro Boost Water Gel SPF 50
- Fotoprotector Fusion Water SPF 50 vs Beauty of Joseon Relief Sun: Rice + Probiotics SPF50+
- Fotoprotector Fusion Water SPF 50 vs Round Lab Birch Juice Moisturizing Sun Cream
- Fotoprotector Fusion Water SPF 50 vs Supergoop! Unseen Sunscreen SPF 50
- Fotoprotector Fusion Water SPF 50 vs La Roche-Posay Anthelios UVMune 400 Invisible Fluid SPF50+
- Fotoprotector Fusion Water SPF 50 vs CeraVe Hydrating Mineral Sunscreen Face Lotion SPF 30
- Fotoprotector Fusion Water SPF 50 vs Bioré UV Aqua Rich Watery Essence SPF50+
Common questions
Is ISDIN Fotoprotector Fusion Water SPF 50 good for sensitive skin?
By our read of the formula, it suits sensitive, normal, oily skin. ISDIN Fotoprotector Fusion Water SPF 50 is a sunscreen built around Tinosorb S, Avobenzone and Vitamin C (LAA). It leans strongest on hydration, barrier repair, brightening / tone. Best suited to sensitive, normal and oily skin. Worth noting it contains fragrance, so reactive skin should patch-test.
How do you use ISDIN Fotoprotector Fusion Water SPF 50?
In the morning, under sunscreen: vitamin C pairs well with SPF and helps defend against daytime damage.
What are the key ingredients in ISDIN Fotoprotector Fusion Water SPF 50?
The actives that do the work are Tinosorb S, Avobenzone, Vitamin C (LAA), Octocrylene, Hyaluronic acid, Octisalate. The rest of the list is texture, preservatives and emulsifiers that hold the formula together.
What the 3D scene shows
The scene shows ISDIN Fotoprotector Fusion Water SPF 50 beside a cross-section of skin, with 5 of its ingredients drawn at the layer each one acts on and at one shared molecular scale: Avobenzone and Octisalate and Octocrylene and Tinosorb S in the stratum corneum, the dead outer layer where most skincare works; Vitamin C (LAA) in the dermis, where collagen and elastin sit. Depths come from the same sourced layer data as the rest of this site, and any ingredient whose layer is not established is left out rather than guessed.
