Isntree Hyper Vitamin C 23% Serum 20ml

23% pure ascorbic acid in a 20ml bottle: high-potency vitamin C kept fresh.

The Isntree Hyper Vitamin C 23% Serum is a high-potency serum built on 23% pure ascorbic acid to brighten the complexion and even skin tone. The compact 20ml format is deliberate: pure vitamin C oxidises over time, and a smaller bottle means you finish it while it's still potent rather than watching a large bottle turn brown.

Key Benefits

• 23% pure ascorbic acid for high-potency brightening
• Evens skin tone and brings radiance to dull complexions
• Compact 20ml format: keeps vitamin C fresher through the use cycle
• Ethyl Ascorbyl Ether adds a second, more stable vitamin C form
• Suited to targeted dark-spot and tone-care routines

Hero Ingredients

• Ascorbic Acid 23%: pure vitamin C at high concentration for brightening
• Ethyl Ascorbyl Ether: a more stable vitamin C derivative working alongside the pure form
• Betula Platyphylla Japonica (Birch) Juice: hydrates alongside the active
• Panthenol + Tocopherol: support comfort and antioxidant stability

Who It’s For

Dull, uneven skin wanting a high-strength vitamin C. Introduce gradually if new to pure ascorbic acid.

How to Use

1. Cleanse and tone: Apply to clean skin after toner.
2. Use a small amount: Smooth two to three drops over the face, avoiding the eye area.
3. Let it absorb: Wait until the serum has settled before moisturiser.
4. Protect in the morning: Finish with broad-spectrum sunscreen.

Pro Tips

• Store it carefully: Keep the bottle tightly closed in a cool, dark place.
• Watch the colour: Replace it if the serum becomes deeply brown or changes smell.
• Introduce gradually: High-strength pure vitamin C may tingle on sensitive skin.
• Use sunscreen: Daily SPF supports a brightening routine.

Ingredients

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