Isntree Onion Fresh Light 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, labelled SPF50+ PA++++ and filed as a triple functional cosmetic for UV protection, brightening and wrinkle care. The base is a wax and silicone stick: silicones, ester oils, two waxes and three oil absorbing powders lead the list, with water only at position 26 of 42. UV protection comes from four organic filters listed at positions 10, 11, 12 and 14; titanium dioxide appears last, beside ultramarine, with a colour index number, and its role is not stated. Niacinamide at 38 and adenosine at 29 carry the other two functions without disclosed levels. The one disclosed level is onion extract at 12,500 ppb, while the brand's callout names it red onion. The brand sells it on oil blotting and a matte finish, citing a one use sebum absorption test, a four week acne skin suitability test, two patch tests and a photoaging and heat aging study, all by footnote only, with no baselines or reports shown. No fragrance, no essential oil and no drying alcohol are listed. No water resistance claim appears on the surfaces read. No lived use reports were collected.

What makes it different?

The oil blotting design is this stick's own ground: three powders, two of them in the top ten, under a silicone lead, sold as a blotting paper sun stick with a one use absorption figure. The filter set is not: the same three organic filters and the niacinamide and adenosine pair appear in the brand's landed body sunscreen, and this stick adds polysilicone 15 as a fourth. The trade-offs sit on the same page: an isopropyl palmitate entry at position 3, two waxes in the top half, no water resistance claim, test results printed as bare percentages, and a satisfaction headline built on perception items.

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.

Key ingredient

• Caprylyl Methicone
• Methyl Methacrylate Crosspolymer
• Isopropyl Palmitate
• Dibutyl Adipate
• Synthetic Wax
• Coco-Caprylate/Caprate
• Butyloctyl Salicylate
• Silica
• Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer
• Diethylamino Hydroxybenzoyl Hexyl Benzoate
• Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine
• Ethylhexyl Triazone
• Microcrystalline Wax
• Polysilicone-15
• Ethylhexyl Palmitate
• Vinyl Dimethicone
• Camellia Japonica Seed Oil
• Allium Cepa (Onion) Bulb Extract
• Houttuynia Cordata Extract
• Cryptomeria Japonica Leaf Extract
• Nelumbo Nucifera Leaf Extract
• Saccharomyces Ferment
• Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate
• Polymethyl Methacrylate
• (-)-alpha-bisabolol
• Water
• Isododecane
• Octyldodecanol
• Adenosine
• Polyglyceryl-4 Isostearate
• Triethoxycaprylylsilane
• Isopropyl Titanium Triisostearate
• Aluminum Hydroxide
• 1,2-Hexanediol
• Phytosterols
• Acetyl Glucosamine
• Allantoin
• Niacinamide
• Butylene Glycol
• Zinc PCA
• Ultramarines
• Titanium Dioxide

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

We could not place these in the list above: 아이소프로필팔미테이트, 코코-카프릴레이트/카프레이트, 에틸헥실팔미테이트, 동백나무씨오일, 옥틸도데칸올

Did the ad claims hold up?

We checked 35 lines this product advertises against the ingredient list and public documents. One of them holds up. The rest are only partly right or have nothing behind them.

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