Isntree Hyaluronic Acid Airy Sun Stick

What is this product?

A Korean sun stick from Isntree, sold as a single 22 g stick from the brand's own storefront. The pack label prints SPF 50+, PA++++ and UVA/UVB, and the statutory panel files it as a triple functional cosmetic for brightening, wrinkle care and UV protection. The 49 printed entries start with water, then a wax and ester stick base, and carry four organic UV filters with no mineral filter entry. Eight hyaluronate-family entries are marked with an asterisk and given one combined level of 10,122 ppb. No fragrance entry, essential oil or ethanol-named entry is printed. The sun protection numbers and the hyaluronate benefit are printed claims without linked test reports.

What makes it different?

The hyaluronate count is this stick's selling line: eight asterisked entries and one combined 10,122 ppb figure, though that count is shared with the same brand's landed body sunscreen. The stick format and its wax, silicone and methacrylate base set it apart from that body product, and it is water first where the same brand's onion stick prints water at 26 of 42. The filter set is four organic filters with no mineral entry, and the sun protection values rest on label print only.

What is in it?

The full ingredient list as the brand publishes it, in the printed order. Each name links to what we know about that ingredient.

This brand publishes its ingredient list in Korean only. Names below are the matching INCI names from the Korean Cosmetic Association ingredient dictionary, except 1 with no dictionary entry, left in Korean.

Worth a closer look

• Water
• Synthetic Wax
• Coco-Caprylate/Caprate
• Dibutyl Adipate
• Butyloctyl Salicylate
• Butylene Glycol
• Methyl Methacrylate Crosspolymer
• Diethylamino Hydroxybenzoyl Hexyl Benzoate
• Ethylhexyl Triazone
• Niacinamide
• Vinyl Dimethicone
• Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer
• Ozokerite
• Polymethylsilsesquioxane
• Polysilicone-15
• Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine
• Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate
• Laminaria Japonica Extract
• Ulmus Davidiana Root Extract
• Aloe Barbadensis Leaf Extract
• Mentha Aquatica Extract
• Viola Mandshurica Flower Extract
• Dioscorea Japonica Root Extract
• Hibiscus Sabdariffa Flower Extract
• Pinus Pinaster Bark Extract
• Olea Europaea (Olive) Fruit Oil
• Bambusa Vulgaris Water
• Sodium Hyaluronate
• Glyceryl Caprylate
• 1,2-Hexanediol
• Sodium Chloride
• Lauryl Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone
• Sorbitan Sesquioleate
• Ethylhexylglycerin
• Adenosine
• Hydrolyzed Sodium Hyaluronate
• Tocopherol
• Ceramide NP
• Silica
• Dipropylene Glycol
• Glycerin
• 폴리우레탄-11
• Hydroxypropyltrimonium Hyaluronate
• Astaxanthin
• Hyaluronic Acid
• Sodium Acetylated Hyaluronate
• Hydrolyzed Hyaluronic Acid
• Sodium Hyaluronate Crosspolymer
• Potassium Hyaluronate

Ingredients with no mark are ones we found nothing notable about, and when marks overlap on one ingredient we show the caution first.

Did the ad claims hold up?

We checked 10 lines this product advertises against the ingredient list and public documents. Here is how they read: backed by evidence: 1 · likely, not proven: 1 · partly backed: 5 · no source confirms it: 2 · says nothing: 1.

Claims translated from Korean, originals preserved.

Each line is quoted as the brand published it, and each one was read on its own against the ingredient list and the documents the brand publishes.

How we read these lines

What else is worth seeing?

Products we read alongside this one.

• Isntree Hyaluronic Airy Body Sun Cream 150mlAnother product in the same category
• Isntree Onion Fresh Light Sun StickAnother product in the same category