Shop ISNTREE Hyper Vitamin C 23 Serum 30ml
Serum
ISNTREE

Hyper Vitamin C 23 Serum 30ml

~$25· 30ml
Dark spotsFine lines & firmnessRadianceDryness

Tracked ingredients

Key actives from our research database. Click any to read the full evidence dossier.

Evidence behind the ingredients

Real citations from our research database — one per tracked active in this product. Click any ingredient name to read its full evidence dossier.

Vitamin CStrong evidence14 citations

Brightens dull skin and helps fade dark spots. Also defends against everyday UV and pollution damage when worn under sunscreen.

Pullar JM et al., The roles of vitamin C in skin health, Nutrients 2017;9(8):866 — concluded topical efficacy "poorly understood"; supports dietary vitamin C

2017Mechanism onlyPMID:28805671View source ↗

Lee JH et al., Effects of VitabridC12 on Skin Inflammation, Annals of Dermatology 2017

2017Mechanism onlyPMID:28966510View source ↗

MFDS Approved Functional Cosmetic Active — Ascorbic Acid and derivatives (whitening). Korean Ministry of Food and Drug Safety, Cosmetic Functional Active Ingredient List — L-ascorbic acid and stabilized derivatives (Magnesium Ascorbyl Phosphate, Ethyl Ascorbic Acid, Sodium Ascorbyl Phosphate) are approved whitening actives in the Korean Functional Cosmetics Codex; authorized concentrations documented in Jeon JS et al., International Journal of Cosmetic Science 2016;38(3):286-93 (PMID:26564311)

2016Regulatory approvalMFDS:AscorbicAcid-WhiteningView source ↗
AdenosineModerate evidence7 citations

A Korean-approved anti-wrinkle ingredient that encourages collagen production for a smoother, firmer look.

Nguyen NH et al., Translational Evaluation of a Disodium Adenosine Monophosphate (AMP2Na)-Based Topical Formulation for Physiology-Aligned Skin Rejuvenation, International Journal of Molecular Sciences 2026

2026Mechanism onlyPMID:42278371View source ↗

MFDS Approved Functional Cosmetic Active — Adenosine (anti-wrinkle). Korean Ministry of Food and Drug Safety, Cosmetic Functional Active Ingredient List

2020Regulatory approvalMFDS:Adenosine-AntiWrinkleView source ↗

Jang M et al., Dissolving microneedle with high molecular weight hyaluronic acid to improve skin wrinkles, dermal density and elasticity, International Journal of Cosmetic Science 2020;42(3):302-309 — Korean comparison: HMW HA + adenosine outperformed LMW HA across wrinkle and elasticity parameters

2020Positive — efficacyPMID:32421218View source ↗
PanthenolModerate evidence5 citations

Pro-vitamin B5. Deeply hydrates and helps repair the skin barrier, calming dry or compromised skin.

Gao Y et al., Evaluation of the Efficacy and Safety of a Panthenol-Enriched Mask for Skin Barrier Recovery After Facial Laser Treatment, Journal of Cosmetic Dermatology 2025;24(7):e70223 — double-blind RCT (n=60): panthenol mask decreased erythema, enhanced hydration, repaired barrier vs saline

2025Positive — efficacyPMID:40613435View source ↗

Cho YS et al., Use of Dexpanthenol for Atopic Dermatitis-Benefits and Recommendations Based on Current Evidence, Journal of Clinical Medicine 2022;11(14):3943 — Korean-authored review; dexpanthenol improves barrier and reduces severity in mild-to-moderate AD

2022Meta-analysis — positivePMID:35887707View source ↗

Heise R et al., Accelerated wound healing with a dexpanthenol-containing ointment after fractional ablative CO2 laser resurfacing of photo-damaged skin in a randomized prospective clinical trial, Cutaneous and Ocular Toxicology 2019;38(3):274-278 — RCT: dexpanthenol significantly faster wound closure vs petroleum jelly post-laser

2019Positive — efficacyPMID:30897983View source ↗
+1 more ingredient
Vitamin EModerate evidence6 citations

A workhorse antioxidant that defends your skin from daily oxidative damage. Pairs especially well with vitamin C, and it's in nearly every good moisturizer for a reason.

Neves JR et al., Efficacy of a topical serum containing L-ascorbic acid, neohesperidin, pycnogenol, tocopherol, and hyaluronic acid in relation to skin aging signs, Journal of Cosmetic Dermatology 2022;21(10):4462-4469 — tocopherol-containing antioxidant serum reduced pollution-induced damage and improved aging signs

2022Positive — efficacyPMID:35150043View source ↗

Warshaw EM et al., Patch Testing With Tocopherol and Tocopherol Acetate: The North American Contact Dermatitis Group Experience, 2001 to 2016, Dermatitis 2021;32(5):308-318 — 15-year NACDG data: positive patch-test reactions to tocopherol rare given widespread cosmetic use

2021Safety assessmentPMID:34238818View source ↗

Lin FH et al., Ferulic acid stabilizes a solution of vitamins C and E and doubles its photoprotection of skin, Journal of Investigative Dermatology 2005;125(4):826-832 — ferulic acid + vit C + vit E combo doubled photoprotection vs C+E alone (cross-listed; same paper cited for Ferulic Acid and Vit C)

2005Positive — efficacyPMID:16185284View source ↗

Sources: PubMed · KCI · J-Stage · CNKI · Wanfang · SFD · MFDS · Cochrane · SCCS · CIR. Every entry points to a specific document. See methodology for what each outcome label means.

Layering conflicts

Ingredients in this product that can react with common actives. Avoid stacking unless noted.

  • Benzoyl peroxide breaks down vitamin C, making both less effective. Use one in the morning and the other at night.

  • Vitamin C and retinol work best at different pH levels. Use vitamin C in the morning and retinol at night.

  • Sensitive skin may flush.

Similar comparisons

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