Quick Summary:
**UPDATE: 05/28/2026: I had a chance to test another new sample of the Isntree Hyaluronic Acid Watery Sun Gel (Thanks Janet!). This time around, the sunscreen only reduced 67.40% of irradiated UVA, 63.26% UVB, and 67.14% of total UVI. Much poorer results compared to the first test (results below).
Date Tested: 2/1/2026
In this Isntree Hyaluronic Acid Watery Sun Gel SPF 50 sunscreen lotion review, I test a decently performing SPF 50 sunscreen. Thanks go to Rebecca for this sample!
The Isntree Hyaluronic Acid Watery Sun Gel SPF 50 is a chemical sunscreen formula which contains Ethylhexyl Salicylate, Homosalate, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Methylene Bis-Benzotriazolyl Tetramethylbutylphenol, Polysilicone-15, and Diethylamino Hydroxybenzoyl Hexyl Benzoate.
The Isntree Hyaluronic Acid Watery Sun Gel SPF 50 reduced 85.77% of irradiated UVA, 82.76% UVB, and 85.58% of total UVI.
Isntree Hyaluronic Acid Watery Sun Gel SPF 50 ingredients
Active ingredients: Ethylhexyl Salicylate, Homosalate, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Methylene Bis-Benzotriazolyl Tetramethylbutylphenol, Polysilicone-15, Diethylamino Hydroxybenzoyl Hexyl Benzoate
Inactive Ingredients: Water, Butylene Glycol, Dibutyl Adipate, Niacinamide, Cyclopentasiloxane, 1,2-Hexanediol, Pentylene Glycol, Centella Asiatica Extract, Portulaca Oleracea Extract, Houttuynia Cordata Extract, Olea Europaea (Olive) Fruit Oil, Ficus Carica (Fig) Fruit Extract, Pinus Pinaster Bark Extract, Ceteth-10, Tromethamine, Decyl Glucoside, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Carbomer, Cetyl PEG/PPG-10/1 Dimethicone, Propanediol, Ethylhexylglycerin, Adenosine, Propylene Glycol, Xanthan Gum, Sodium Hyaluronate, Glycerin, Tocopherol, Hydrogenated Lecithin, Ceramide NP, Astaxanthin, Sodium Acetylated Hyaluronate, Sodium Hyaluronate Crosspolymer, Ascorbyl Propyl Hyaluronate, Hydroxypropyltrimonium Hyaluronate, Hydrolyzed Sodium Hyaluronate, Hydrolyzed Hyaluronic Acid, Hyaluronic Acid
Manufacturers Website: www.isntree-global.com
Isntree Hyaluronic Acid watery Sun Gel SPF 50 characteristics at a glance:
- With a broad spectrum of SPF50+ PA++++ to block harmful UV rays.
- Infused with active, naturally-derived ingredients to moisturize and soothe irritated skin.
- Contains Hyaluronic Acid to moisturize skin, Astaxanthin to improve skin elasticity, and Ceramide to replenish moisture in skin.
- Enriched with Centella Asiatica Extract to soothe irritated skin and Fig Fruit Extract to soften skin texture.
- Viscosity is low
Prepared slide BEFORE testing
The Isntree Hyaluronic Acid Watery Sun Gel SPF 50 distributed evenly, yet exhibited thinning towards the center of the slide. The accumulation of sunscreen at the edges of the slide sample are indicative of the low-viscosity of the formula.
Isntree Hyaluronic Acid Watery Sun Gel SPF 50 UV blocking test results
Ultraviolet light quick reference:
UVA: The Ultraviolet wavelength from 315nm – 400nm. The “Aging UV light” – Causes wrinkles.
UVB: The Ultraviolet wavelength from 280nm – 315nm. The “Bad UV light” – Causes skin cancer.
UVI: The global sun UV index. The more a sunscreen can reduce the level of UVI, the better.
UV test results:
Ultraviolet sensor readings:
| Before Sunscreen | After Sunscreen | % UV Blocked | |
|---|---|---|---|
| TEMP | 67.5 | 68.5625 | |
| UVA | 43,834 | 6,238.75 | 85.77% |
| UVB | 2,409.5 | 415.5 | 82.76% |
| UVI | 25.855 | 3.7275 | 85.58% |
Want to know more about how I test sunscreen? Head here to read about the details.
Testing notes:
This is a decent sunscreen, and provides moderate UV protection
Want to try the Isntree Hyaluronic Acid Watery Sun Gel SPF 50?
Works well, but is slightly thin
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A link to purchase this sunscreen: