The Ordinary
Amino Acids + B5The Ordinary
Marine HyaluronicsA serum built around Panthenol and Lactic acid, for hydration and barrier repair.
A serum built around Lactic acid and BHA, for hydration and smoothing.
Brand price
USD 8.28 · checked 25 Sept 2026 · brand's site
Brand price
USD 8.28 · checked 25 Sept 2026 · brand's site

At a Glance

Every check both products could be assessed on comes out the same. Tap any answer to see why.

Key Ingredients


Benefits

Hydrating8
Boosts hydration and relieves dry, tight skin.
Betaine, Glutamic Acid, Histidine, Panthenol, PCA, Propanediol, Sodium Lactate, Sodium PCA
Barrier Repair3
Strengthens and restores the skin's natural barrier.
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

Concerns

May Worsen Seborrheic Dermatitis1
May feed the yeast involved in seborrheic dermatitis.
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.

Ingredients Side-by-side

PCA (in both products)
Humectant
Emollient
Pseudoalteromonas Exopolysaccharides
Skin Conditioning
Skin Conditioning
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
Propanediol
Solvent, Viscosity Controlling
Propanediol is the organic compound that conforms to the formula
Learn more about Propanediol →Sodium PCA
Antistatic, Hair Conditioning, Humectant, Skin Conditioning
Sodium 5-oxo-2-pyrrolidinecarboxylate
Learn more about Sodium PCA →Sodium Lactate
Buffering, Humectant, Keratolytic
Sodium Lactate is lactic acid.
Learn more about Sodium Lactate →Arginine
Antistatic, Fragrance, Hair Conditioning, Skin Conditioning
L-Arginine
Learn more about Arginine →PCA
Humectant, Moisturising
L-2-Pyrrolidone-5-carboxylic acid
Learn more about PCA →Aspartic Acid
Antistatic, Fragrance, Hair Conditioning, Skin Conditioning
Aspartic acid
Learn more about Aspartic Acid →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 →
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