The INKEY List Retinol Serum Versus Neutrogena Rapid Wrinkle Repair Retinol Pro+ .5% Power Serum

The INKEY List Retinol Serum Versus Neutrogena Rapid Wrinkle Repair Retinol Pro+ .5% Power Serum Detailed comparison of The INKEY List Retinol Serum versus Neutrogena Rapid Wrinkle Repair Retinol Pro+ .5% Power Serum. This anti-aging serum is formulated around Retinyl Acetate and Palmitoyl Tetrapeptide-7 to soften the look of wrinkles and refine skin texture. This anti-aging serum is formulated around Retinol and Bisabolol to soften the look of wrinkles and refine skin texture. Water Glycerin Butylene Glycol Propanediol Dicaprylyl Carbonate Retinyl Acetate Dimethicone Phenoxyethanol Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer Caprylyl Glycol Phospholipids Squalane Glycine Soja Oil Carbomer Polysorbate 60 Tocopheryl Acetate Glycolipids Sodium Hydroxide Sodium Phytate Sorbitan Isostearate Glycine Soja Sterols Tetrahexyldecyl Ascorbate Leuconostoc/Radish Root Ferment Filtrate Hyaluronic Acid Sodium Lactate Tocopherol Polysorbate 20 Palmitoyl Tetrapeptide-7 Palmitoyl Tripeptide-1 Water, Glycerin, Butylene Glycol, Propanediol, Dicaprylyl Carbonate, Retinyl Acetate, Dimethicone, Phenoxyethanol, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Caprylyl Glycol, Phospholipids, Squalane, Glycine Soja Oil, Carbomer, Polysorbate 60, Tocopheryl Acetate, Glycolipids, Sodium Hydroxide, Sodium Phytate, Sorbitan Isostearate, Glycine Soja Sterols, Tetrahexyldecyl Ascorbate, Leuconostoc/Radish Root Ferment Filtrate, Hyaluronic Acid, Sodium Lactate, Tocopherol, Polysorbate 20, Palmitoyl Tetrapeptide-7, Palmitoyl Tripeptide-1 Isohexadecane Pentaerythrityl Tetraethylhexanoate PPG-15 Stearyl Ether Triethyl Citrate Retinol Parfum Bisabolol BHT Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate Isohexadecane, Dicaprylyl Carbonate, Pentaerythrityl Tetraethylhexanoate, PPG-15 Stearyl Ether, Triethyl Citrate, Polysorbate 20, Retinol, Parfum, Tocopheryl Acetate, Bisabolol, BHT, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Dicaprylyl Carbonate comes from carbonic acid and caprylyl alcohol, a fatty alcohol. It is an emollient and gives skin a velvet feel. The sources of Dicaprylyl Carbonate may be synthetic or from animals. As an emollient, Dicaprylyl Carbonate creates a film on the skin. This film traps moisture in, keeping your skin soft and hydrated. Polysorbate 20 is a gentle, water-soluble emulsifier and mild surfactant. It stops oil and water from separating to keep your formulas blended and stable. It also acts as a mild penetration enhancer by helping active ingredients absorb slightly better. The common safety discussion around this ingredient involves a manufacturing byproduct called 1,4-dioxane. Trace amounts can form during production but the EU's Scientific Committee on Consumer Safety has concluded that levels at/below 10 ppm in finished products are safe (commercial products consistently fall within acceptable margins). True allergic reactions are uncommon and the CIR Expert Panel has confirmed this ingredient to be safe as used in cosmetics. Because it is derived from lauric acid, it may not be fungal acne safe. Tocopheryl Acetate is a stable, shelf-friendly form of vitamin E. Formulators love it because plain vitamin E oxidizes quickly once it hits air. This acetate version stays stable and resists going off, helping to extend a product's shelf life. It's actually inactive on its own and works like a slow-release "storage" form; the enzymes in your skin called esterases gradually convert it into active vitamin E over time. One in vivo study showed 5% of the acetate in the living layer of the epidermis converted to vitamin E after 5 days of application. This study also found the skin gained protection against UV damage even though the conversion was slow and small. Once converted, vitamin E acts as a skin's main fat-soluble antioxidant that fights free radicals to protect skin from damage. Topical vitamin E generally boosts the skin's photoprotection, and it reduced UV-damage in animal models. 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. Overall, it has a pretty solid safety profile and has been found to be non-irritating and non-comedogenic. Allergic reactions may happen but stay rare due to how widely the ingredient gets used. The concentration will vary depending on the formula; industry data shows 0.1% in baby lotions, 3% in lipsticks, and 5% in foot powders. You can also find this ingredient at 100% in a pure vitamin E oil. Most leave-on skincare keeps it at the lower end, often between 0.5-1%.