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How do you use Isdin Fusion Water sunscreen?

With summer in full swing, it’s more important than ever to protect your skin from the sun’s harmful UV rays. An effective sunscreen is the best defense against sunburn, premature aging, and skin cancer. Isdin Fusion Water SPF 50+ is a popular sunscreen known for its lightweight, fast-absorbing, and hydrating formula. Here is a step-by-step guide on how to properly apply this sunscreen for maximum protection.

What is Isdin Fusion Water?

Isdin Fusion Water SPF 50+ is a facial sunscreen designed to provide broad-spectrum protection from UVA and UVB rays. It has a lightweight, fast-absorbing texture that hydrates skin while defending against sun damage. The active ingredients are octocrylene, Tinosorb S, and avobenzone.

Some key benefits of Isdin Fusion Water sunscreen include:

  • SPF 50+ provides high broad-spectrum protection
  • Absorbs quickly without leaving a white cast
  • Has a serum-like texture that hydrates skin
  • Oil-free and non-comedogenic formula suitable for acne-prone skin
  • Water-resistant for 80 minutes
  • Anti-photoaging with antioxidant vitamin E
  • Dermatologically tested for sensitive skin

How to Apply Isdin Fusion Water

To properly apply Isdin Fusion Water sunscreen:

  1. Cleanse – Start with a clean face. Wash with your regular facial cleanser and pat dry.
  2. Apply evenly – Squeeze a dime to quarter size amount of sunscreen and dot onto face. Gently rub the sunscreen around your face, spreading it evenly.
  3. Cover all areas – Be sure to cover often missed spots like around the eyes, ears, neck, and lips.
  4. Let it set – Give the sunscreen 1-2 minutes to absorb before layering any other products like makeup.
  5. Reapply – Reapply every 2 hours if outdoors or after swimming or sweating heavily.

Tips for Proper Application

Follow these tips to make sure you are applying Isdin Fusion Water SPF effectively:

  • Use 1/4 tsp for face and neck to achieve stated SPF.
  • Apply 15 minutes before sun exposure to allow it to fully set.
  • Reapply after toweling off, swimming, or sweating heavily.
  • Avoid sunscreen contact with eyes. Carefully apply around eye area.
  • Apply evenly and don’t rub excessively to prevent thinning coverage.
  • Layer sunscreen under moisturizer and makeup for protection.
  • Check expiration date and store below 86°F for potency.

Using Isdin Fusion Water Under Makeup

Isdin Fusion Water works beautifully as a primer and makeup base in addition to a sunscreen. The lightweight texture absorbs quickly without leaving behind greasiness or tackiness. Here are tips for applying under makeup:

  • After cleansing, dot Isdin Fusion Water evenly over face and blend thoroughly.
  • Let it set for 2 minutes before makeup application.
  • It leaves a smooth, even base ideal for foundation, BB cream, etc.
  • For longer makeup wear, dust a light layer of translucent powder over sunscreen before makeup.
  • Reapply sunscreen every 2 hours if outdoors, especially before reapplying face makeup.

Isdin Fusion Water Ingredients

Key active and inactive ingredients in Isdin Fusion Water SPF 50+:

Active Ingredients Purpose
Octocrylene Absorbs UVB rays
Tinosorb S Broad-spectrum UVA/UVB protection
Avobenzone Protects against UVA rays
Inactive Ingredients Purpose
Aqua Water base
Isododecane Quick-absorbing emollient
Glycerin Skin-hydrating agent
Tocopheryl Acetate Vitamin E antioxidant

Isdin Fusion Water vs. Competition

How does Isdin Fusion Water compare to other popular facial sunscreens?

Isdin Fusion Water Neutrogena Hydro Boost Supergoop Unseen Sunscreen
SPF 50+ 50 40
Texture Serum gel Gel cream Silky lotion
White cast None Slight None
Water resistant 80 min 80 min 40 min
Key ingredients Tinosorb S, Octocrylene Avobenzone Zinc oxide, Avobenzone

While all provide decent sun protection, Isdin Fusion Water stands out for its ultra lightweight texture, matte finish, and longer water resistance.

Who Is Isdin Fusion Water Best For?

Isdin Fusion Water is an excellent choice for those looking for:

  • Light, fast-absorbing sunscreen – The serum-gel texture melts into skin and leaves no greasy residue.
  • Facial sunscreen under makeup – It doubles as a color-correcting primer and smooth base for makeup.
  • Oil control – The oil-free, matte finish works for acne-prone and oily skin types.
  • Sensitive skin – The fragrance-free formula is suitable for easily irritated skin.
  • Outdoor activity – It maintains protection even after sweating or swimming thanks to high water resistance.

Frequently Asked Questions

Here are answers to some common questions about Isdin Fusion Water SPF 50+:

How long does it last if applied correctly?

When applied correctly in adequate amounts, it will maintain its stated SPF 50+ protection for 40-80 minutes before needing reapplication.

Does it leave a white cast on darker skin tones?

No, it rubs in clear with no white residue or ashiness on darker skin. The lightweight texture works for all skin tones.

Can it be used on the body too?

Yes, while formulated as a facial sunscreen it can safely be used anywhere including the body, scalp, ears, and neck with proper application.

Is it reef-safe?

No, the active ingredients octocrylene and avobenzone may cause damage to coral reef ecosystems. Opt for a mineral/reef-safe sunscreen for ocean activity.

Does it sting eyes?

It’s always best to avoid direct contact with eyes when applying sunscreen. There are no harsh chemical filters that typically cause stinging. Handle application around eyes carefully.


Isdin Fusion Water SPF 50+ is an exceptional sunscreen that goes beyond basic protection. With a lightweight serum texture, matte finish, and ability to double as a makeup primer, it offers a versatile range of benefits. Follow the proper application tips outlined here to get the most out of its broad-spectrum sun protection. Reapply frequently, use adequate amounts, and pair with other sun-safe habits to protect your skin this summer.