Skin First Hyaluronic Acid + Ceramide Booster Versus Paula's Choice Calm Repairing Serum

Skin First Hyaluronic Acid + Ceramide Booster Versus Paula's Choice Calm Repairing Serum Detailed comparison of Skin First Hyaluronic Acid + Ceramide Booster versus Paula's Choice Calm Repairing Serum. This hydrating serum is formulated around Sodium Hyaluronate and Ceramide NP to hydrate skin and strengthen the skin barrier. This calming serum is formulated around Sodium Hyaluronate and Ceramide NP to calm redness and strengthen the skin barrier. No concerns Water Sodium Hyaluronate Glycerin Hyaluronic Acid Hydrolyzed Hyaluronic Acid Hydrolyzed Sodium Hyaluronate Ceramide NP Ceramide AP Ceramide EOP Phytosphingosine Cholesterol Panthenol Allantoin Glucose Sorbitol Sodium Glutamate Urea Sodium PCA Glycine Hydrolyzed Wheat Protein Sodium Lauroyl Lactylate Carbomer Xanthan Gum Lactic Acid Phenoxyethanol Ethylhexylglycerin Tetrasodium Glutamate Diacetate Sodium Dehydroacetate Citric Acid Water, Sodium Hyaluronate, Glycerin, Hyaluronic Acid, Hydrolyzed Hyaluronic Acid, Hydrolyzed Sodium Hyaluronate, Ceramide NP, Ceramide AP, Ceramide EOP, Phytosphingosine, Cholesterol, Panthenol, Allantoin, Glucose, Sorbitol, Sodium Glutamate, Urea, Sodium PCA, Glycine, Hydrolyzed Wheat Protein, Sodium Lauroyl Lactylate, Carbomer, Xanthan Gum, Lactic Acid, Phenoxyethanol, Ethylhexylglycerin, Tetrasodium Glutamate Diacetate, Sodium Dehydroacetate, Citric Acid Polysorbate 20 Caprylic/Capric Triglyceride PEG/PPG-14/4 Dimethicone Disodium EDTA Sodium Cocoyl Amino Acids Epilobium Angustifolium Extract Beta-Glucan Sarcosine Chrysanthemum Parthenium Flower Extract Sea Whip Extract Glycine Soja Seed Extract Glycyrrhiza Glabra Root Extract Magnesium Aspartate Potassium Aspartate Ubiquinone 1,2-Hexanediol Caprylyl Glycol Leuconostoc/Radish Root Ferment Filtrate Calcium Chloride Propylene Glycol Tocopherol Sodium Metabisulfite Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate Sodium Benzoate Potassium Sorbate Water, Glycerin, Sodium Lauroyl Lactylate, Sodium Hyaluronate, Polysorbate 20, Caprylic/Capric Triglyceride, PEG/PPG-14/4 Dimethicone, Xanthan Gum, Disodium EDTA, Sodium Cocoyl Amino Acids, Ceramide NP, Ethylhexylglycerin, Epilobium Angustifolium Extract, Ceramide AP, Cholesterol, Phytosphingosine, Beta-Glucan, Sarcosine, Carbomer, Chrysanthemum Parthenium Flower Extract, Sea Whip Extract, Glycine Soja Seed Extract, Hyaluronic Acid, Glycyrrhiza Glabra Root Extract, Ceramide EOP, Magnesium Aspartate, Potassium Aspartate, Ubiquinone, Phenoxyethanol, 1,2-Hexanediol, Caprylyl Glycol, Leuconostoc/Radish Root Ferment Filtrate, Calcium Chloride, Propylene Glycol, Tocopherol, Sodium Metabisulfite, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Sodium Benzoate, Potassium Sorbate Be the first to review These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Carbomer is a synthetic thickening and gelling agent. It's basically the ingredient that gives a lot of serums, gels, creams, and sunscreens their smooth, non-sticky texture. Although legally permitted at very high levels, carbomers are normally used at concentrations below 1%. It also needs to be neutralized to actually thicken, and because it is a large molecule, it doesn't really penetrate the skin barrier. Allergy-wise, the risk is very low. Clinical studies show carbomers have low potential for skin irritation/sensitization even at concentrations up to 100%. A 2024 UK study patch-tested 1,302 patients and found true allergy to the parent group of carbomer to be rare with no confirmed relevant reactions. Ceramide AP is is a skin-identical lipid that mimics what your skin already makes naturally. Ceramides help maintain epidermal integrity and barrier function. You'll often see this ingredient paired with other ceramides (like ceramide NP), cholesterol, or fatty acids because this combination best mimics the natural lipid mix your skin already has. The skin's ability to produce ceramides gets disrupted in skin conditions like eczema. This in turn weakens the skin barrier and applying ceramides topically has been shown to replenish what's been lost to restore barrier function. Most of the studies with Ceramide AP test it as part of a multi-ceramide complex; studies reinforce ceramide AP's role in rebalancing ceramides in skin and improving skin hydration. Ceramide EOP is formally known as Ceramide 1. It is naturally found in skin and part of the intercellular "mortar" holding everything together in your outermost layer. EOP stands for a linked Ester fatty acid, a linked Omega hydroxy fatty acid, and the Phytosphingosine base. What makes Ceramide EOP special is its ultra-long fatty acid chain; this unique structure allows it to bridge the lipid layers in your skin barrier to prevent water loss (something no other ceramide can do). Low levels of Ceramide EOP have been found in people with eczema and psoriasis. Using it together with other ceramides, cholesterol, and linoleic acid have been shown to meaningfully improve hydration and reduce water loss. In one clinical study, a regimen using Ceramide EOP, NP, and AP led to significant symptom improvements in patients with eczema, psoriasis, and dry skin in just 4 weeks. You'll usually see concentrations between 0.1-0.5% in formulations. Overall, this is a well-tolerated and safe ingredient for cosmetic use. Ceramide NP (formerly known as Ceramide 3) is one of the skin's naturally occurring lipids. Since ceramides are the major lipid components of the skin, they are crucial for maintaining skin barrier and hydration. Ceramide NP most closely mirrors the dominant kind in human skin amongst ceramide subtypes. This ceramide works by slotting into gaps within the stratum co