Dr. Althea Gentle Vitamin C Serum — Efficacy 3.8/5.0, Safety 4.4/5.0 | DemythSkin
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[ DemythSkin Verdict ]
Dr. Althea Gentle Vitamin C Serum
Dr.

Dr. Althea Gentle Vitamin C Serum

SerumBrightening
Efficacy
Solid
3.8 / 5.0
Safety
Safe
4.4 / 5.0
System Verdict
This is a genuinely well-formulated beginner vitamin C/niacinamide serum with solid brightening power at a gentle, barrier-friendly base. Efficacy is strong because the formula combines S Tier brightening actives (5% niacinamide, 3‑O‑ethyl ascorbic acid, and 20% sea buckthorn water) high in the INCI, supported by humectants and soothing agents, and avoids unstable L‑ascorbic acid or harsh exfoliants, though the vitamin C derivative is slightly weaker than pure L‑ascorbic at equivalent percentages.
Active Ingredients Detected
A Tier: Good BasicsProven Results
Niacinamide3-O-Ethyl Ascorbic AcidAdenosineAllantoinBifida Ferment Filtrate
B Tier: Supporting IngredientsPromising Ingredients
Castor Oil/IPDI Copolymer
D Tier: Potential IrritantsBe Cautious
Melaleuca Alternifolia (Tea Tree) Leaf Extract
What Each Ingredient Does
Water
Solvent base
Hippophae Rhamnoides Fruit Water
Vitamin-rich botanical, brightening
Niacinamide
Brightening, barrier support
Propanediol
Humectant, penetration enhancer
1,2-Hexanediol
Solvent, antimicrobial preservative
Camellia Sinensis Leaf Water
Soothing antioxidant green tea water
Caprylic/Capric Triglyceride
Emollient, texture enhancer
Castor Oil/IPDI Copolymer
Encapsulated oil delivery, texture
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Gel-forming thickener
Tromethamine
pH adjuster, neutralizing agent
Xanthan Gum
Natural thickener, stabilizer
3-O-Ethyl Ascorbic Acid
Stable vitamin C derivative, brightening
Adenosine
Anti-aging, soothing
Disodium EDTA
Chelator, stabilizes formula
Allantoin
Soothing, barrier-supporting
Bifida Ferment Filtrate
Probiotic ferment, barrier support
Ethylhexylglycerin
Preservative booster, humectant
Butylene Glycol
Humectant, solvent
Melaleuca Alternifolia (Tea Tree) Leaf Extract
Antimicrobial, acne-targeting extract
Caprylyl Glycol
Humectant, preservative booster
Full Ingredient List (INCI)

Water, Hippophae Rhamnoides Fruit Water, Niacinamide, Propanediol, 1,2-Hexanediol, Camellia Sinensis Leaf Water, Caprylic/Capric Triglyceride, Castor Oil/Ipdi Copolymer, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Tromethamine, Xanthan Gum, 3-O-Ethyl Ascorbic Acid, Adenosine, Disodium Edta, Allantoin, Bifida Ferment Filtrate, Ethylhexylglycerin, Butylene Glycol, Melaleuca Alternifolia (Tea Tree) Leaf Extract, Caprylyl Glycol

Frequently Asked

Is Dr. Althea Gentle Vitamin C Serum worth it?

Dr. Althea Gentle Vitamin C Serum scores 3.8 out of 5.0 for efficacy (Solid) and 4.4 out of 5.0 for safety (Safe) on DemythSkin's independent ingredient analysis. This is a genuinely well-formulated beginner vitamin C/niacinamide serum with solid brightening power at a gentle, barrier-friendly base. Efficacy is strong because the formula combines S Tier brightening actives (5% nia

What are the key active ingredients in Dr. Althea Gentle Vitamin C Serum?

Dr. Althea Gentle Vitamin C Serum contains no gold-standard actives — its formula is built on supporting and base ingredients rather than clinically transformative actives.

Does Dr. Althea Gentle Vitamin C Serum contain fragrance or known irritants?

DemythSkin flags these ingredients in Dr. Althea Gentle Vitamin C Serum as potential irritants: Melaleuca Alternifolia (Tea Tree) Leaf Extract.

How is Dr. Althea Gentle Vitamin C Serum scored?

DemythSkin grades every product on two independent axes: efficacy (whether the ingredients have clinical evidence of working) and safety (irritation and sensitisation risk). Ingredients are classified S through D against a database of over 3,000 compounds. No brand pays for a score.

Analyze on DemythSkin →

Analysis last updated: 2026-07-09. DemythSkin is an independent ingredient analyzer. Scores are computed by a deterministic rubric from published clinical evidence — no brand pays for a score.