Isntree Hyper Vitamin C 23 Serum 20ml

Isntree Hyper Vitamin C 23 is a 20ml serum built around ascorbic acid at 23%, one of the higher concentrations available in a vitamin C serum, backed up by ethyl ascorbyl ether, a more stable vitamin C derivative. Tocopherol and panthenol round out the supporting ingredients, with adenosine and gardenia florida fruit extract further down the list. The bottle needs its dropper twisted into place before first use.

Why You'll Love It

• Ascorbic acid at 23% sits at the higher end of vitamin C serum concentrations.
• Ethyl ascorbyl ether, a more stable vitamin C derivative, backs up the ascorbic acid.
• Tocopherol (vitamin E) and panthenol are worked into the same formula for added support.
• Dropper applicator gives precise control over the 2 to 3 drops used per application.
• Gardenia florida fruit extract and adenosine round out the supporting ingredients.

Key Ingredients

• Ascorbic Acid (23%): the core vitamin C active in the formula, at a higher concentration than many serums on the market
• Ethyl Ascorbyl Ether: a more stable vitamin C derivative backing up the ascorbic acid further down the list
• Tocopherol (Vitamin E): an antioxidant included alongside the vitamin C actives, next to panthenol and adenosine

Full Ingredients (INCI)

Water, Ascorbic Acid(23%), Propanediol, Betaine, 1,2-Hexanediol, Polyglycerin-3, Tromethamine, Ethyl Ascorbyl Ether, Hydroxyethyl Urea, Betula Platyphylla Japonica Juice, Ethylhexylglycerin, Adenosine, Disodium EDTA, Panthenol, Gardenia Florida Fruit Extract, Dextrin, Tocopherol

How to Use

Remove the cap from the bottle, place the dropper inside, and twist gently until it locks into place. Take 2 to 3 drops on the palm of your hands and gently pat into your skin for maximum absorption. For daytime use, follow up with sunscreen. Use a sunscreen alongside this product during the day, since the formula includes ingredients that call for daytime sun protection.

Suitable For

Suitable for those wanting a high-strength vitamin C serum, though the 23% concentration is stronger than many alternatives on the market. Patch test first and introduce it gradually if you have not used a high-strength vitamin C serum before. Use sunscreen during the day.

Product Details

About Brand

Isntree is a Korean skincare brand that builds each formula around a single named active ingredient.

Isntree is a Korean skincare brand carried by Enrapture Cosmetics, built around single-focus formulas such as hyaluronic acid, retinol and vitamin C. Shop the full Isntree range.

FAQ

Q: What vitamin C concentration does this serum contain?
Ans: Ascorbic acid at 23%, backed up by ethyl ascorbyl ether, a more stable vitamin C derivative.

Q: Do I need sunscreen with this serum?
Ans: Yes, the brand's own instructions recommend following daytime use with sunscreen, standard practice with vitamin C serums.

Q: How do I set up the dropper?
Ans: Remove the cap, place the dropper inside the bottle, and twist until it locks into place before first use.

Q: Is 23% a strong concentration?
Ans: Yes, it sits at the higher end of vitamin C serum concentrations, so patch test first if you have not used a high-strength version before.

Q: Can I use this alongside retinol?
Ans: The product data does not give specific layering guidance for retinol, so if you use both, consider applying them at different times of day or alternating nights until you know how your skin responds.