Skin science article
Paula's Choice Omega+ Complex Serum Versus The Ordinary Amino Acids + B5
Paula's Choice Omega+ Complex Serum Versus The Ordinary Amino Acids + B5 This barrier-repair serum is formulated around Linoleic Acid and Linolenic Acid to strengthen the skin barrier and hydrate skin. This hydrating serum is formulated around Sodium PCA and P
Paula's Choice Omega+ Complex Serum Versus The Ordinary Amino Acids + B5
This barrier-repair serum is formulated around Linoleic Acid and Linolenic Acid to strengthen the skin barrier and hydrate skin.
This hydrating serum is formulated around Sodium PCA and Panthenol to hydrate skin and strengthen the skin barrier.
What's inside
Key Ingredients
No key ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Glycerin
Diheptyl Succinate
Candelilla/Jojoba/Rice Bran Polyglyceryl-3 Esters
Linum Usitatissimum Seed Oil
Linoleic Acid
Linolenic Acid
Passiflora Edulis Seed Oil
Ceramide EOP
Ceramide Eos
Ceramide NP
Ceramide Ns
Caprooyl Sphingosine
Olea Europaea Oil Unsaponifiables
Caprooyl Phytosphingosine
Sodium Hyaluronate
Cholesterol
Ceramide AP
Butyrospermum Parkii Butter Unsaponifiables
Tocopherol
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Prunus Domestica Seed Oil
Lauryl Laurate
Glyceryl Behenate
Hydrogenated Lecithin
Sodium Phytate
Trehalose
Isohexadecane
Sodium Stearoyl Lactylate
Capryloyl Glycerin/Sebacic Acid Copolymer
Xanthan Gum
Cetyl Alcohol
Tetrahexyldecyl Ascorbate
Agar
Glyceryl Stearate
Ceteareth-25
Cetearyl Alcohol
Behenic Acid
Glyceryl Rosinate
Citric Acid
Benzyl Alcohol
Ethylhexylglycerin
Water, Glycerin, Diheptyl Succinate, Candelilla/Jojoba/Rice Bran Polyglyceryl-3 Esters, Linum Usitatissimum Seed Oil, Linoleic Acid, Linolenic Acid, Passiflora Edulis Seed Oil, Ceramide EOP, Ceramide Eos, Ceramide NP, Ceramide Ns, Caprooyl Sphingosine, Olea Europaea Oil Unsaponifiables, Caprooyl Phytosphingosine, Sodium Hyaluronate, Cholesterol, Ceramide AP, Butyrospermum Parkii Butter Unsaponifiables, Tocopherol, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Prunus Domestica Seed Oil, Lauryl Laurate, Glyceryl Behenate, Hydrogenated Lecithin, Sodium Phytate, Trehalose, Isohexadecane, Sodium Stearoyl Lactylate, Capryloyl Glycerin/Sebacic Acid Copolymer, Xanthan Gum, Cetyl Alcohol, Tetrahexyldecyl Ascorbate, Agar, Glyceryl Stearate, Ceteareth-25, Cetearyl Alcohol, Behenic Acid, Glyceryl Rosinate, Citric Acid, Benzyl Alcohol, Ethylhexylglycerin
Propanediol
Betaine
Sodium PCA
Panthenol
Sodium Lactate
Arginine
PCA
Aspartic Acid
Glycine
Alanine
Serine
Threonine
Valine
Proline
Isoleucine
Lysine Hcl
Histidine
Phenylalanine
Glutamic Acid
Dimethyl Isosorbide
Polysorbate 20
Trisodium Ethylenediamine Disuccinate
1,2-Hexanediol
Caprylyl Glycol
Water, Propanediol, Betaine, Sodium PCA, Panthenol, Sodium Lactate, Arginine, PCA, Aspartic Acid, Glycine, Alanine, Serine, Threonine, Valine, Proline, Isoleucine, Lysine Hcl, Histidine, Phenylalanine, Glutamic Acid, Citric Acid, Dimethyl Isosorbide, Polysorbate 20, Trisodium Ethylenediamine Disuccinate, 1,2-Hexanediol, Caprylyl Glycol
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Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Citric Acid is an alpha hydroxy acid (AHA) naturally found in citrus fruits like oranges, lemons, and limes.
Like other AHAs, citric acid can exfoliate skin by breaking down the bonds that hold dead skin cells together. This helps reveal smoother and brighter skin underneath.
However, this exfoliating effect only happens at high concentrations (20%) which can be hard to find in cosmetic products.
Due to this, citric acid is usually included in small amounts as a pH adjuster. This helps keep products slightly more acidic and compatible with skin's natural pH.
In skincare formulas, citric acid can:
While it can provide some skin benefits, research shows lactic acid and glycolic acid are generally more effective and less irritating exfoliants.
Most citric acid used in skincare today is made by fermenting sugars (usually from molasses). This synthetic version is identical to the natural citrus form but easier to stabilize and use in formulations.
Rosacea skin has a lower threshold for acids generally, with 62.5% of rosacea subjects in one study reacting to lactic acid in a sting test. This is why we mark citric acid as a potential rosacea trigger.
However, this ingredient shows up as a pH adjuster or chelator at roughly 0.1-1% in many products. These low levels are unlikely to be an issue for rosacea skin and becomes a potential trigger at exfoliating concentrations (20%). Because everybody's skin is unique, we recommend a patch test if you are unsure.
Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.
So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.
You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Remember to stay hydrated!