Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

The INKEY List Retinol Eye Cream Versus Neutrogena Retinol Boost Serum

The INKEY List Retinol Eye Cream Versus Neutrogena Retinol Boost Serum Detailed comparison of The INKEY List Retinol Eye Cream versus Neutrogena Retinol Boost Serum. This anti-aging eye moisturizer is formulated around Retinol and Sodium Hyaluronate to soften

This source-based comparison does not add ratings or recommend a winner.

The INKEY List Retinol Eye Cream Versus Neutrogena Retinol Boost Serum Detailed comparison of The INKEY List Retinol Eye Cream versus Neutrogena Retinol Boost Serum. This anti-aging eye moisturizer is formulated around Retinol and Sodium Hyaluronate to soften the look of wrinkles and refine skin texture. This anti-aging serum is formulated around Retinol and Ascorbyl Glucoside to soften the look of wrinkles and refine skin texture. Water Caprylic/Capric Triglyceride Glycerin Butylene Glycol Pentaerythrityl Distearate Shea Butter Ethyl Esters Cetearyl Olivate Phenoxyethanol Benzyl Alcohol Sorbitan Olivate Acrylates/C10-30 Alkyl Acrylate Crosspolymer Sodium Hydroxide Sodium Hyaluronate Sodium Stearoyl Glutamate Copernicia Cerifera Cera Propanediol Glycogen Sodium Gluconate Retinol Polysorbate 20 Ethylhexylglycerin Dehydroacetic Acid Citric Acid Helianthus Annuus Seed Oil 1,2-Hexanediol Caprylyl Glycol Disodium Cocoamphodiacetate Tocopherol Xanthan Gum Ethyl Ferulate Humulus Lupulus Extract Water, Caprylic/Capric Triglyceride, Glycerin, Butylene Glycol, Pentaerythrityl Distearate, Shea Butter Ethyl Esters, Cetearyl Olivate, Phenoxyethanol, Benzyl Alcohol, Sorbitan Olivate, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Sodium Hydroxide, Sodium Hyaluronate, Sodium Stearoyl Glutamate, Copernicia Cerifera Cera, Propanediol, Glycogen, Sodium Gluconate, Retinol, Polysorbate 20, Ethylhexylglycerin, Dehydroacetic Acid, Citric Acid, Helianthus Annuus Seed Oil, 1,2-Hexanediol, Caprylyl Glycol, Disodium Cocoamphodiacetate, Tocopherol, Xanthan Gum, Ethyl Ferulate, Humulus Lupulus Extract Dimethicone Aluminum Starch Octenylsuccinate Dimethicone Crosspolymer Ammonium Acryloyldimethyltaurate/Vp Copolymer Cellulose C12-15 Alkyl Benzoate Ascorbyl Glucoside Hydrolyzed Myrtus Communis Leaf Extract C13-14 Isoparaffin Laureth-7 Polyacrylamide Disodium EDTA BHT Sorbic Acid Parfum Water, Dimethicone, Aluminum Starch Octenylsuccinate, Dimethicone Crosspolymer, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Cellulose, C12-15 Alkyl Benzoate, Ascorbyl Glucoside, Retinol, Hydrolyzed Myrtus Communis Leaf Extract, Caprylic/Capric Triglyceride, Sodium Hyaluronate, Ethylhexylglycerin, Glycerin, Caprylyl Glycol, C13-14 Isoparaffin, Laureth-7, Polyacrylamide, Xanthan Gum, Disodium EDTA, Sodium Hydroxide, BHT, Sorbic Acid, Phenoxyethanol, Parfum 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. Caprylic/Capric Triglyceride (aka MCT Oil) is a lightweight emollient, solvent, and texture enhancer. It is considered a skin-softener by helping to prevent moisture loss. Though it behaves like an oil, it is not technically one due to its chemical composition. One perk of this ingredient is that it is very stable, resistant to oxidation, and unlikely to go rancid. In practice, that translates to a long shelf life and a consistently elegant skin feel. While there is an assumption Caprylic Triglyceride can clog pores due to it being derived from coconut oil, there is no research supporting this. Just patch test if you have concerns. Fractionated coconut oil and MCT Oil are both listed as Caprylic/Capric Triglyceride according to INCI. This is because INCI names are based on the ingredient’s final chemical composition and not its marketing name or source. This ingredient is treated as the gold standard fungal acne safe oil. Even though it is coconut derived, the problematic lauric acid is stripped out. This leaves just caprylic (C8) and capric (C10) acid. These chain lengths actually trend antifungal; a 2020 study found caprylic acid was enough to disrupt Malassezia furfur cell membrane, with a caprylic acid derivative damaging membrane structures at concentrations as low as 0.2%. Caprylyl Glycol is a humectant, skin conditioner, emollient, and preservative booster derived from either caprylic acid or synthetically created. Typical use levels vary from 0.3-1% as a preservative booster and go up to 2% to condition skin. Because it is not a free-fatty acid, this ingredient is fungal acne safe (there's nothing for Malassezia to feed on). Ethylhexylglycerin is created from glycerin. It is a multitasker ingredient that: The CIR Expert Panel found minimal skin absorption or sensitization of any kind in a safety assessment. Though this ingredient is considered well-tolerated, a small number of cases of allergic dermatitis have been published since 2002. Just be sure to patch test if you are unsure. Industry-reported use ranges from 8% in rinse-off products and 2% in leave-on formulations. Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum. Topically, glycerin does several things at once: Your skin makes glycerin on its own (mostly from sebaceous oil breakdown) and shuttles it to your outermost layer of skin, or your epidermis, via aquaporin-3. Aquaporin-3 is a transporter that is essential for normal skin hydration, elasticity, and repair. Interestingly, mice lacking in AQP3 have dry and less elastic skin that can be fully corrected with glycerin. This ingredient is non-irritating, plays well with almost every ingredient, and works across all skin types. Typical use is anywhere between 3-10% but can go up to 79% in some leave-on products. Ju