Isntree Hyaluronic Acid Fresh Sun Serum 50ml SPF50+ PA++++

Lightweight, airy hydration meets high-performance sun protection

If sticky, greasy sunscreen has ever made you skip UV protection altogether, this serum is about to change that. With an 81% hydrating essence base, the serum-like texture absorbs quickly, leaving skin feeling fresh on the surface and deeply hydrated within. It delivers SPF50+ PA++++ broad-spectrum protection against both UVA and UVB rays, while clinical testing confirmed an impressive cooling and soothing effect: 97.29% improvement in surface hydration and a 4.53°C drop in skin temperature immediately after application.

Zinc hyaluronic acid and triple booster complex

Ultra-low molecular weight hyaluronic acid and zinc hyaluronic acid deliver moisture deep into the skin while helping to regulate excess oil. Three booster ingredients work in synergy to enhance hydration absorption.

• Squalane: Delivers moisture and locks in hydration
• Allantoin: Hydrates and soothes the skin
• Ectoin: Strengthens the skin barrier while maintaining moisture

Multiple molecular weights of hyaluronic acid penetrate deep into the stratum corneum to replenish hydration from within.

Daily UV defense designed for oily and combination skin

Non-comedogenic tested, so even acne-prone skin can wear it without worrying about clogged pores. In consumer testing, both "absorbs quickly into skin" and "leaves a fresh, non-greasy finish" scored 100% satisfaction. Apply an appropriate amount as the final step of your skincare routine, spreading evenly over sun-exposed areas. For best results, apply 15 minutes before heading outdoors.

Start UV protection at the final step of your skincare routine

Apply after your usual serums and creams, as the last step in your morning routine. For full sun protection, apply at least 15 minutes before heading outdoors. With SPF50+ PA++++, it shields against both UVA and UVB rays, making it ideal for everything from daily commutes to extended outdoor activities.

How to apply evenly across the face

Dispense an adequate amount onto your palm, then dot it across your forehead, both cheeks, nose, and chin. Gently blend outward from the center of your face. The hydrating serum texture absorbs quickly and dries down clear with no white cast. Don't forget sun-exposed areas like your neck and ears.

Reapplication tips for long days outdoors

For prolonged outdoor exposure, reapply every 2–3 hours. Thanks to the Airyfit formula, layering feels lightweight and fresh—never heavy or patchy. To reapply over makeup, gently pat the product onto skin with your fingertips for seamless adherence without disrupting your base.

Tips for oily and combination skin

Non-comedogenic tested, so it won't clog pores—safe for acne-prone skin. Ultra-low molecular weight hyaluronic acid and zinc hyaluronate deliver hydration while balancing oil, making it comfortable even on shine-prone T-zones. In clinical testing, skin surface hydration improved by 97.29% and skin surface temperature decreased by 12.75% immediately after application, offering a cooling, soothing effect.

Storage precautions

Store in a cool place away from direct sunlight and out of reach of children. Best used within 12 months of opening.

Water, Dibutyl Adipate, Propanediol, Butyloctyl Salicylate, Ethylhexyl Triazone, Niacinamide, Drometrizole Trisiloxane, Polyglyceryl-3 Diisostearate, Terephthalylidene Dicamphor Sulfonic Acid, Polymethylsilsesquioxane, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Tromethamine, Panthenol, 1,2-Hexanediol, Pentylene Glycol, Glyceryl Stearate, Silica, Caprylyl Methicone, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Potassium Cetyl Phosphate, Lactobacillus Ferment, Poly C10-30 Alkyl Acrylate, Methylpropanediol, Carbomer, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Ethylhexylglycerin, Hydrolyzed Sodium Hyaluronate, Xanthan Gum, Adenosine, Polyether-1, Sodium Hyaluronate, Biosaccharide Gum-1, Squalane, Allantoin, Erythritol, Tocopherol, Ectoin, Hydroxypropyltrimonium Hyaluronate, Zinc Hydrolyzed Hyaluronate, Glycerin, Butylene Glycol, Fagopyrum Esculentum (Buckwheat) Extract, Citric Acid, Sodium Acetylated Hyaluronate, Hydrolyzed Hyaluronic Acid, Hydrogenated Lecithin, Hyaluronic Acid, Polyglyceryl-10 Stearate, Centella Asiatica Extract, Sodium Hyaluronate Crosspolymer, Sodium Ascorbyl Phosphate, Tocopheryl Acetate, Cocos Nucifera (Coconut) Water, Potassium Hyaluronate, Retinyl Palmitate, Biotin, Thiamine HCL, Folic Acid, Pyridoxine, Cyanocobalamin

The list of ingredients is subject to change. Please consult the packaging of the product purchased.