Kiehl's Skin Rescuer Versus Prequel Half & Half Peptides & Ceramides Fluid Moisturizer

Kiehl's Skin Rescuer Versus Prequel Half & Half Peptides & Ceramides Fluid Moisturizer Detailed comparison of Kiehl's Skin Rescuer versus Prequel Half & Half Peptides & Ceramides Fluid Moisturizer. This calming moisturizer is formulated around Squalane and Centella Asiatica Extract to calm redness and strengthen the skin barrier. This barrier-repair moisturizer is formulated around Ceramide NP and Hexapeptide-11 to strengthen the skin barrier and soften the look of wrinkles. Water Glycerin Squalane Propanediol Undecane Caprylic/Capric Triglyceride Butyrospermum Parkii Butter Tridecane PEG-100 Stearate Glyceryl Stearate PEG-20 Stearate Mannose Lauroyl Lysine Cetyl Alcohol Propylene Glycol Phenoxyethanol Ammonium Polyacryloyldimethyl Taurate Triethanolamine Carbomer Tocopherol P-Anisic Acid Ectoin Centella Asiatica Extract Xanthan Gum Ceteareth-25 Acetyl Dipeptide-1 Cetyl Ester Rosa Gallica Flower Extract Hydroxypalmitoyl Sphinganine Ceramide NP Behenic Acid Cholesterol Ceramide Ns Chamomilla Recutita Extract Ceramide AP Ceramide EOP Ceramide Eos Caprooyl Phytosphingosine Caprooyl Sphingosine Citric Acid Sodium Hydroxide Water, Glycerin, Squalane, Propanediol, Undecane, Caprylic/Capric Triglyceride, Butyrospermum Parkii Butter, Tridecane, PEG-100 Stearate, Glyceryl Stearate, PEG-20 Stearate, Mannose, Lauroyl Lysine, Cetyl Alcohol, Propylene Glycol, Phenoxyethanol, Ammonium Polyacryloyldimethyl Taurate, Triethanolamine, Carbomer, Tocopherol, P-Anisic Acid, Ectoin, Centella Asiatica Extract, Xanthan Gum, Ceteareth-25, Acetyl Dipeptide-1 Cetyl Ester, Rosa Gallica Flower Extract, Hydroxypalmitoyl Sphinganine, Ceramide NP, Behenic Acid, Cholesterol, Ceramide Ns, Chamomilla Recutita Extract, Ceramide AP, Ceramide EOP, Ceramide Eos, Caprooyl Phytosphingosine, Caprooyl Sphingosine, Citric Acid, Sodium Hydroxide Isopropyl Myristate Ethylhexyl Olivate Hydrolyzed Rice Protein Ceramide As Hexapeptide-11 Matrixyl 3000 Polyglyceryl-10 Stearate Triolein Ammonium Acryloyldimethyltaurate/Vp Copolymer Glyceryl Oleate Hydroxyacetophenone Glyceryl Dioleate Caprylyl Glycol Betaine Sodium Stearoyl Glutamate Sodium Phytate Sodium PCA Sodium Lactate PCA Sodium Benzoate Serine Alanine Palmitic Acid Glycine Hydrogenated Lecithin Ethylhexyl Palmitate Butylene Glycol Ethylhexylglycerin Glutamic Acid Lysine Hcl Threonine Arginine Proline Polysorbate 20 Water, Glycerin, Propanediol, Isopropyl Myristate, Ethylhexyl Olivate, Squalane, Hydrolyzed Rice Protein, Ceramide NP, Ceramide As, Ceramide Ns, Ceramide EOP, Ceramide AP, Hexapeptide-11, Matrixyl 3000, Polyglyceryl-10 Stearate, Triolein, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Glyceryl Oleate, Undecane, Hydroxyacetophenone, Glyceryl Dioleate, Caprylyl Glycol, Xanthan Gum, Tridecane, Betaine, Sodium Stearoyl Glutamate, Citric Acid, Sodium Phytate, Sodium PCA, Sodium Hydroxide, Sodium Lactate, PCA, Sodium Benzoate, Serine, Alanine, Palmitic Acid, Glycine, Hydrogenated Lecithin, Ethylhexyl Palmitate, Butylene Glycol, Phenoxyethanol, Ethylhexylglycerin, Glutamic Acid, Lysine Hcl, Threonine, Arginine, Proline, Tocopherol, Carbomer, Polysorbate 20 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