ISDIN

ISDIN Fusion Water Magic SPF 40.

Sunscreen

About this product

A broad-spectrum chemical sunscreen with a lightweight, fluid consistency designed for daily sun protection. SPF 40.

Full ingredients

Octocrylene (9%), Homosalate (7.3%), Octisalate (4.5%), Avobenzone (2.7%), Water, Dimethicone, Silica, Butyloctyl Salicylate, Propanediol, Lauryl PEG/PPG-18/18 Methicone, Poly C10-30 Alkyl Acrylate, C20-22 Alkyl Phosphate, C20-22 Alcohols, 1,2-Hexanediol, Hydroxyacetophenone, Potassium Cetyl Phosphate, Vp/Eicosene Copolymer, Polysorbate 60, Glycerin, Caprylyl Glycol, Tocopheryl Acetate, Polyacrylate Crosspolymer-6, Styrene/Acrylates Copolymer, Tetrasodium Glutamate Diacetate, Fragrance, Hydrated Silica, Sclerotium Gum, Sodium Hyaluronate, Xanthan Gum, Porphyridium Cruentum Extract, Caprylic/Capric Triglyceride, Physalis Pubescens Fruit Juice, Sodium Hydroxide, T-Butyl Alcohol, Tocopherol, Citric Acid

Guru Score

74%

Mixed

Early verdict · Few reviews so far

What the gurus are saying

This sunscreen's fluid, water-like texture earns praise for being comfortable to wear daily, leaving no white cast, and not gunking up in beards. Gurus found it both hydrating and protective in warm weather. The caveat: once temperatures climb above 80 degrees Fahrenheit, the lightweight watery formula may become less reliable, so it's worth having a backup for very hot days.

Synthesized from 3 expert reviews · most recent take December 2025

What they liked

Hydrating, fluid texture
No white cast
Chemical formula, doesn't clog beards

What they flagged

Very watery, tricky to apply evenly
Balmy finish, not ideal with makeup or heat

Type

SunscreenLiquid

Key actives

Hyaluronic acidVitamin ESPF

Formula notes

Contains fragranceNo drying alcohol

Where to buy

Sephora → Amazon → Google →

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Scan it in the shopFree iPhone app. Scores in the aisle.

What the gurus are saying.

Every take we've logged from this product's reviews across YouTube. Click any row to watch the moment they said it.

All takes Yay takes Nay takes Mixed takes Hide sponsored

Tea with MD

115k subs

~Mixed

"Very lightweight, more of a watery kind of milky type of sunscreen. Not very thick, not whipped. It's just more light and fluid and I like it, but it's not my absolute favorite."

208SkinDoc

2.10M subs

~Yay

"This is the Isdin Fusion Water Magic SPF 40 broad spectrum daily use sunscreen. This is a good hydrating sunscreen and it's very much like a fluid in its consistency. I have worn it before and it's done a good job protecting me. This is a chemical sunscreen, no white cast, not gunking up in the beard at all."

The Style and Beauty Doctor

222k subs

~Mixed

"I like things that dry down to a [...] dry finish, and I'm not really feeling this one. I wore this on a day when it was pretty warm out, [...] in the mid to high 70s, and it was fine when I didn't have makeup on. But if it gets hotter than that, like [...] over 80 degrees, this is probably not the sunscreen I would want to wear. And I would definitely not wear it on a makeup day during the summer. So I'd say this is more of a fall, maybe winter, and probably spring sunscreen."

What the evidence says.

Independent of what the gurus think, this is what the published research supports about the main active ingredients here.

Sunscreen filters

Sun protection is the best evidenced way to slow visible ageing, and the filters are what does the work. Mineral and chemical filters both protect when a product is applied thickly enough and often enough, which is where most people fall short rather than on the choice of filter.

Source: DermNet

Humectants and emollients

Ingredients like these draw water into the surface layers and slow how fast it leaves. The evidence is for comfort, softness and hydration rather than for changing the structure of the skin.

Source: DermNet

Vitamin E

Vitamin E is an antioxidant, and it is often in a formula to keep the other ingredients stable rather than as the active itself. It pairs well with vitamin C, though on its own the evidence for visible change is limited.

Source: NIH, National Library of Medicine

Frequently asked.

What is ISDIN Fusion Water Magic SPF 40?

A broad-spectrum chemical sunscreen with a lightweight, fluid consistency designed for daily sun protection. SPF 40.

Is ISDIN Fusion Water Magic SPF 40 worth it?

The gurus mostly approve it, but with enough reservations to keep it in the middle at a Guru Score of 74%.

What is ISDIN Fusion Water Magic SPF 40's Guru Score?

ISDIN Fusion Water Magic SPF 40 holds a Guru Score of 74%. That is our read on how warmly the experts talk about it, based on the verdicts of 3 expert reviewers we have collected.