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The Ordinary Marine Hyaluronics ingredients: is it worth it?
Hydration is the only real job here, and the formula does that well.
Hydration is the only real job here, and the formula does that well.
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The score is driven by a strong humectant base (glycerin, PCA salts, sodium lactate, propanediol, amino acids) plus marine extracts that support water binding, while salicylic acid sits far enough down the list that it is unlikely to meaningfully exfoliate in this leave-on serum; there is no evidence of a dedicated brightening or anti-aging active at clinically compelling strength.
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DemythSkin rates The Ordinary Marine Hyaluronics 4.1/5 for efficacy and 4.4/5 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 (11)⌄
FULL INGREDIENT LIST⌄
Aqua, Glycerin, Algae Extract, Pseudoalteromonas Ferment Extract, Ahnfeltia Concinna Extract, Arginine, Glycine, Alanine, Serine, Valine, Isoleucine, Proline, Threonine, Histidine, Phenylalanine, Aspartic Acid, Pca, Sodium PCA, Sodium Lactate, Salicylic Acid, Citric Acid, Propanediol, Dimethyl Isosorbide, Ethoxydiglycol, Polysorbate 20, Potassium Sorbate, Sodium Salicylate, Sodium Benzoate, Hexylene Glycol, 1,2-Hexanediol, Phenoxyethanol, Caprylyl Glycol
WHAT EACH INGREDIENT DOES (24)⌄
- Aqua
- solvent
- Glycerin
- humectant
- Algae Extract
- marine humectant
- Pseudoalteromonas Ferment Extract
- marine ferment humectant
- Ahnfeltia Concinna Extract
- red algae extract
- Arginine
- amino acid humectant
- Glycine
- amino acid humectant
- Alanine
- amino acid humectant
- Serine
- amino acid humectant
- Valine
- amino acid humectant
- Isoleucine
- amino acid humectant
- Proline
- amino acid humectant
- Threonine
- amino acid humectant
- Histidine
- amino acid humectant
- Phenylalanine
- amino acid humectant
- Aspartic Acid
- amino acid humectant
- Pca
- natural moisturizing factor
- Sodium PCA
- natural moisturizing factor
- Sodium Lactate
- humectant and NMF
- Salicylic Acid
- beta hydroxy acid
- Citric Acid
- pH adjuster
- Propanediol
- solvent and humectant
- Dimethyl Isosorbide
- solvent and penetration aid
- Ethoxydiglycol
- solvent and carrier
EXTERNAL CITATIONS
Glycerin: Well-established humectant that draws water into the stratum corneum.
Sodium PCA: Part of the skin's natural moisturizing factor; supports hydration.
Sodium Lactate: Humectant/NMF component that helps bind water in skin.
Salicylic Acid: BHA can exfoliate, but here it appears low in the INCI, so likely contributes more as a minor supporting ingredient than a primary treatment active.
DISCLAIMER: THIS ANALYSIS IS FOR INFORMATION ONLY. NOT MEDICAL ADVICE. AI-GENERATED DATA BASED ON PUBLICLY AVAILABLE INGREDIENT LISTS. VERIFY WITH A MEDICAL PROFESSIONAL.
The Ordinary Marine Hyaluronics: common questions
Is The Ordinary Marine Hyaluronics worth it?
The Ordinary Marine Hyaluronics scores 4.1 out of 5.0 for efficacy (Effective) and 4.4 out of 5.0 for safety (Gentle) on DemythSkin's independent ingredient analysis. Hydration is the only real job here, and the formula does that well.
What are the key active ingredients in The Ordinary Marine Hyaluronics?
The Ordinary Marine Hyaluronics contains these gold-standard actives with strong clinical evidence: Salicylic Acid.
Does The Ordinary Marine Hyaluronics contain fragrance or known irritants?
DemythSkin's analysis found no flagged irritants in The Ordinary Marine Hyaluronics. It scores 4.4 out of 5.0 for safety.
How is The Ordinary Marine Hyaluronics 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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