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Isntree Hyper Vitamin C 23 Serum ingredients: is it worth it?
High-potency vitamin C with a credible brightening premise, but not a perfectly engineered antioxidant serum.
High-potency vitamin C with a credible brightening premise, but not a perfectly engineered antioxidant serum.
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The 23% L-ascorbic acid is the main efficacy driver and is positioned immediately after water, while ethyl ascorbyl ether provides additional vitamin C support. The formula also supplies humectants and panthenol, but it lacks the classic vitamin C–vitamin E–ferulic acid antioxidant system, and the supplied INCI does not disclose the serum's pH or packaging details. At 23%, efficacy depends heavily on an appropriately acidic pH and strong oxidation control; without those details, the score is restrained rather than elite.
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DemythSkin rates Isntree Hyper Vitamin C 23 Serum 4.3/5 for efficacy and 4.3/5 for safety.
ACTIVE INGREDIENTS BY TIER
Gold Standards
High clinical proof | Skin-transformativeReliable
Proven resultsPotent
Developing evidenceOverhyped | Marketing
Hype | Limited dataDocumented Irritants
Evidence-backed flagFORMULATION BASE (6)⌄
FULL INGREDIENT LIST⌄
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 Read more [
WHAT EACH INGREDIENT DOES (17)⌄
- Water
- Solvent and formula base
- Ascorbic Acid (23%)
- Antioxidant and brightening active
- Propanediol
- Humectant and solvent
- Betaine
- Humectant and osmolyte
- 1,2-Hexanediol
- Solvent and preservative booster
- Polyglycerin-3
- Humectant and skin conditioner
- Tromethamine
- pH adjuster and buffer
- Ethyl Ascorbyl Ether
- Vitamin C derivative
- Hydroxyethyl Urea
- Humectant and skin conditioner
- Betula Platyphylla Japonica Juice
- Botanical skin-conditioning agent
- Ethylhexylglycerin
- Preservative booster and conditioner
- Adenosine
- Skin-conditioning treatment active
- Disodium EDTA
- Chelating and formula stabilizer
- Panthenol
- Humectant and soothing conditioner
- Gardenia Florida Fruit Extract
- Botanical skin-conditioning agent
- Dextrin
- Texture modifier and stabilizer
- Tocopherol
- Antioxidant and skin conditioner
EXTERNAL CITATIONS
Ascorbic Acid: Topical L-ascorbic acid is a well-studied antioxidant and brightening treatment; efficacy depends on concentration, acidic pH, and stability.
Tocopherol: Vitamin E can complement topical vitamin C antioxidant systems, although this formula does not disclose the classic ferulic-acid combination.
Panthenol: Panthenol is a well-established humectant and skin-conditioning ingredient.
DISCLAIMER: THIS ANALYSIS IS FOR INFORMATION ONLY. NOT MEDICAL ADVICE. AI-GENERATED DATA BASED ON PUBLICLY AVAILABLE INGREDIENT LISTS. VERIFY WITH A MEDICAL PROFESSIONAL.
A cheaper serum with a similar formula
A partial ingredient match (32%), not a close dupe.
Isntree Hyper Vitamin C 23 Serum: common questions
Is Isntree Hyper Vitamin C 23 Serum worth it?
Isntree Hyper Vitamin C 23 Serum scores 4.3 out of 5.0 for efficacy (Effective) and 4.3 out of 5.0 for safety (Gentle) on DemythSkin's independent ingredient analysis. High-potency vitamin C with a credible brightening premise, but not a perfectly engineered antioxidant serum.
What are the key active ingredients in Isntree Hyper Vitamin C 23 Serum?
Isntree Hyper Vitamin C 23 Serum contains these gold-standard actives with strong clinical evidence: Ascorbic Acid (23%).
Does Isntree Hyper Vitamin C 23 Serum contain fragrance or known irritants?
DemythSkin's analysis found no flagged irritants in Isntree Hyper Vitamin C 23 Serum. It scores 4.3 out of 5.0 for safety.
How is Isntree Hyper Vitamin C 23 Serum scored?
DemythSkin grades every product on two independent scores: efficacy (whether the ingredients have clinical evidence of working) and safety (irritation and sensitisation risk). Ingredients are graded S through D against a database of over 3,000 compounds. Brand and price are not part of the score, and no brand pays for one.
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