The Ordinary
Marine HyaluronicsMedik8
Exo-PDRN Prismatic+A serum built around Lactic acid and BHA, for hydration and smoothing.
A serum built around Niacinamide and Centella asiatica, for barrier repair and hydration.
Brand price
USD 8.28 · checked 25 Sept 2026 · brand's site
Brand price
GBP 79.00 · checked 8 Oct 2026 · brand's site
At a Glance
They come out differently on EU-allergen-free; that row is shaded. Tap any answer to see why.
Key Ingredients
Centella asiatica (Cica)1
Centella asiatica (cica), used to calm irritation.
Hyaluronic acid1
Hyaluronic acid and its salts; a humectant that binds water to the skin.
Benefits
Hydrating9
Boosts hydration and relieves dry, tight skin.
Algae Extract, Ethoxydiglycol, Glycerin, Histidine, PCA, Propanediol, Pseudoalteromonas Ferment Extract, Sodium Lactate, Sodium PCA
Barrier Repair3
Strengthens and restores the skin's natural barrier.
Smoothing5
Refines rough or uneven texture.
Algae Extract, Caprylyl Glycol, Citric Acid, Salicylic Acid, Sodium Lactate
Hydrating5
Boosts hydration and relieves dry, tight skin.
Butylene Glycol, Glutamic Acid, Glycerin, Panthenol, Sodium Hyaluronate
Barrier Repair7
Strengthens and restores the skin's natural barrier.
Allantoin, Caprylyl Glycol, Glycerin, Laminaria Digitata Extract, Niacinamide, Panthenol, Punica Granatum Extract
Reduces Irritation3
Eases discomfort and supports skin resilience.
Redness Reducing3
Soothes visible redness and calms irritation.
Concerns
May Worsen Seborrheic Dermatitis1
May feed the yeast involved in seborrheic dermatitis.
May Worsen Keratosis Pilaris1
May clog follicles or strip skin prone to keratosis pilaris.
May Worsen Seborrheic Dermatitis1
May feed the yeast involved in seborrheic dermatitis.
Ingredients Side-by-side
Emollient
Pseudoalteromonas Exopolysaccharides
Skin Conditioning
Skin Conditioning
Smoothing
0 / —
- Niacinamide
- Acne Fighting
- Barrier Repair
- Brightening
- Dark Spots
- Even Tone
- Oil Control
- Pore Refining
- Redness Reducing
Skin Conditioning
Centella Asiatica Leaf Extract
Skin Conditioning
- Centella asiatica (Cica)
- Redness Reducing
- Reduces Irritation
Lactobacillus Extracellular Vesicles
Skin Conditioning
Skin Conditioning
Antioxidant
Skin Protecting
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Aqua
Solvent
Glycerin
Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care, Perfuming, Humectant, Skin Protecting, Solvent, Viscosity Controlling
Glycerin may be plant, synthetic or animal depending on the supplier.
Learn more about Glycerin →Arginine
Antistatic, Fragrance, Hair Conditioning, Skin Conditioning
L-Arginine
Learn more about Arginine →Glycine
Antistatic, Buffering, Hair Conditioning, Skin Conditioning
Glycine
Learn more about Glycine →Alanine
Antistatic, Fragrance, Hair Conditioning, Skin Conditioning
Alanine
Learn more about Alanine →Serine
Antistatic, Fragrance, Hair Conditioning, Skin Conditioning
2-Amino-3-hydroxypropanoic acid
Learn more about Serine →Valine
Antistatic, Fragrance, Hair Conditioning, Skin Conditioning
2-Amino-3-methylbutanoic acid
Learn more about Valine →Isoleucine
Antistatic, Hair Conditioning, Skin Conditioning
L-Isoleucine; DL-allo-Isoleucine; 2-Amino-3-methylpentanoic acid
Learn more about Isoleucine →Proline
Hair Conditioning, Skin Conditioning
2-Pyrrolidinecarboxylic acid, (S)-
Learn more about Proline →Threonine
Antistatic, Hair Conditioning, Hair Waving Or Straightening
2-Amino-3-hydroxybutanoic acid
Learn more about Threonine →
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