Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

Kiehl's Midnight Recovery Concentrate Versus Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide

Kiehl's Midnight Recovery Concentrate Versus Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide Detailed comparison of Kiehl's Midnight Recovery Concentrate versus Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide. This

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Kiehl's Midnight Recovery Concentrate Versus Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide Detailed comparison of Kiehl's Midnight Recovery Concentrate versus Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide. This barrier-repair oil is formulated around Squalane and Rosa Canina Fruit Oil to strengthen the skin barrier and hydrate skin. This anti-aging serum is formulated around Niacinamide and Ceramide NP to soften the look of wrinkles and refine skin texture. Caprylic/Capric Triglyceride Dicaprylyl Carbonate Squalane Rosa Canina Fruit Oil Oenothera Biennis Oil Simmondsia Chinensis Seed Oil Coriandrum Sativum Seed Oil Tocopherol Lavandula Angustifolia Oil Pelargonium Graveolens Flower Oil Linalool Rosmarinus Officinalis Leaf Oil Citronellol Geraniol Lavandula Hybrida Oil Cucumis Sativus Extract Cucumis Sativus Fruit Extract Curcuma Longa Root Extract Limonene Citral Sclareolide Rosa Damascena Flower Oil Jasminum Officinale Extract Jasminum Sambac Flower Extract Helianthus Annuus Seed Oil Caprylic/Capric Triglyceride, Dicaprylyl Carbonate, Squalane, Rosa Canina Fruit Oil, Oenothera Biennis Oil, Simmondsia Chinensis Seed Oil, Coriandrum Sativum Seed Oil, Tocopherol, Lavandula Angustifolia Oil, Pelargonium Graveolens Flower Oil, Linalool, Rosmarinus Officinalis Leaf Oil, Citronellol, Geraniol, Lavandula Hybrida Oil, Cucumis Sativus Extract, Cucumis Sativus Fruit Extract, Curcuma Longa Root Extract, Limonene, Citral, Sclareolide, Rosa Damascena Flower Oil, Jasminum Officinale Extract, Jasminum Sambac Flower Extract, Helianthus Annuus Seed Oil Water Glycerin Butylene Glycol Pentylene Glycol Niacinamide Cetyl Alcohol Isohexadecane Isononyl Isononanoate Diisopropyl Sebacate 2-Oleamido-1,3-Octadecanediol 4-T-Butylcyclohexanol Acetyl Dipeptide-1 Cetyl Ester Adenosine Ceramide NP Hydroxypalmitoyl Sphinganine Lauroyl Lysine Octyldodecanol Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate Sodium Chloride Sodium Hyaluronate Sodium Hydroxide Trisodium Ethylenediamine Disuccinate Retinol Dicaprylyl Ether Ammonium Polyacryloyldimethyl Taurate Behenyl Alcohol Caprylyl Glycol Carbomer Cetearyl Alcohol Cetearyl Glucoside Glycine Soja Oil Hydroxyethylcellulose Lecithin Phenethyl Alcohol Poloxamer 188 Polycaprolactone Sorbitan Laurate Steareth-100 CI 40800 Chlorphenesin Phenoxyethanol Water, Glycerin, Butylene Glycol, Pentylene Glycol, Niacinamide, Cetyl Alcohol, Isohexadecane, Isononyl Isononanoate, Diisopropyl Sebacate, 2-Oleamido-1,3-Octadecanediol, 4-T-Butylcyclohexanol, Acetyl Dipeptide-1 Cetyl Ester, Adenosine, Ceramide NP, Hydroxypalmitoyl Sphinganine, Lauroyl Lysine, Octyldodecanol, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Sodium Chloride, Sodium Hyaluronate, Sodium Hydroxide, Trisodium Ethylenediamine Disuccinate, Retinol, Tocopherol, Dicaprylyl Ether, Ammonium Polyacryloyldimethyl Taurate, Behenyl Alcohol, Caprylyl Glycol, Carbomer, Cetearyl Alcohol, Cetearyl Glucoside, Glycine Soja Oil, Helianthus Annuus Seed Oil, Hydroxyethylcellulose, Lecithin, Phenethyl Alcohol, Poloxamer 188, Polycaprolactone, Sorbitan Laurate, Steareth-100, CI 40800, Chlorphenesin, Phenoxyethanol These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Helianthus Annuus Seed Oil is a plant oil derived from the seeds of a sunflower. It is rich in fatty acids, primarily linoleic acid and oleic acid. This gives it emollient and skin conditioning properties. The reason this ingredient is so effective is because it forms a thin film on the skin that reduces transepidermal water loss (TEWL) while supplying linoleic acid to the stratum corneum to improve barrier strength. The high linoleic acid content is particularly noteworthy for acne-prone skin. Research suggests that acne-prone skin tends to be deficient in linoleic acid in sebum. Topical application may help replenish this to support a healthier follicular environment and less comedone-promoting sebum. One randomized study found sunflower seed oil preserved skin barrier integrity in adult volunteers with and without atopic dermatitis (outperforming olive oil). This ingredient is well-studied, gentle, and an effective emollient suitable for most skin types. On fungal acne: This ingredient may not be Fungal acne (Malassezia folliculitis) safe. This is because it contains fatty acids with carbon chain lengths in the C11-C24 range. Tocopherol is a fat-soluble antioxidant known as Vitamin E. You'll find this ingredient in the vast majority of skincare (for good reason). It works to neutralize free radicals, or unstable molecules generated by UV exposure, pollution, and other environmental stressors, before they can cause oxidative damage to your skin cells. Topically applied tocopherol has been shown to protect against UV damage by ramping up the skin's own natural defense enzymes. It also acts as a skin conditioning agent; some studies show that regular topical use can improve the skin's water-binding capacity over 2-4 weeks. This ingredient is especially loved for being a team player. When combined with Vitamin C, the photoprotective effect of both ingredients roughly doubles and the combo also helps reduce UV-induced DNA damage. This ingredient has some brightening potential but it's more of a prevention ingredient than spot-fader. Cell studies show it can slow down melanin production but it's worth noting that it's not the most powerful brightener out there. In formulations, it also serves as a stabilizer that helps protect other oxidation-prone ingredients from degrading. Concentrations usually range from 0.1-1% in most leave-on products.