Paula's Choice Pro-Collagen Peptide Firming Eye Serum Versus Paula's Choice C5 Super Boost Eye Cream

Paula's Choice Pro-Collagen Peptide Firming Eye Serum Versus Paula's Choice C5 Super Boost Eye Cream Detailed comparison of Paula's Choice Pro-Collagen Peptide Firming Eye Serum versus Paula's Choice C5 Super Boost Eye Cream. This anti-aging eye moisturizer is formulated around Squalane and Palmitoyl Tetrapeptide-7 to soften the look of wrinkles and hydrate skin. This brightening eye moisturizer is formulated around Ascorbyl Glucoside and 3-O-Ethyl Ascorbic Acid to brighten dull-looking skin and soften the look of wrinkles. Water Dimethicone Pentylene Glycol Silica Squalane Undecane Glycerin Pyrus Malus Fruit Extract Tridecane 1,2-Hexanediol Ammonium Acryloyldimethyltaurate/Vp Copolymer Cetyl Alcohol Polyglyceryl-10 Laurate Polyglyceryl-4 Caprate Hydroxyacetophenone Propanediol Tridecapeptide-1 Palmitoyl Tetrapeptide-7 Acetyl Hexapeptide-8 Arginine/Lysine Polypeptide Acrylates/C10-30 Alkyl Acrylate Crosspolymer Sodium Phytate Sorbitan Oleate Diosmine Coleus Forskohlii Root Extract Caprylyl Glycol Xanthan Gum Glyceryl Caprylate Pseudoalteromonas Ferment Extract Tocopherol Water, Dimethicone, Pentylene Glycol, Silica, Squalane, Undecane, Glycerin, Pyrus Malus Fruit Extract, Tridecane, 1,2-Hexanediol, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Cetyl Alcohol, Polyglyceryl-10 Laurate, Polyglyceryl-4 Caprate, Hydroxyacetophenone, Propanediol, Tridecapeptide-1, Palmitoyl Tetrapeptide-7, Acetyl Hexapeptide-8, Arginine/Lysine Polypeptide, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Sodium Phytate, Sorbitan Oleate, Diosmine, Coleus Forskohlii Root Extract, Caprylyl Glycol, Xanthan Gum, Glyceryl Caprylate, Pseudoalteromonas Ferment Extract, Tocopherol Dicaprylyl Carbonate Triheptanoin Ascorbyl Glucoside 3-O-Ethyl Ascorbic Acid Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer Arachidyl Alcohol Cetearyl Alcohol C13-15 Alkane Ascorbyl Palmitate Sh-Polypeptide-121 Hyaluronic Acid Zerumbone Bacillus Ferment Tocopheryl Acetate Butyrospermum Parkii Butter Unsaponifiables Oryza Sativa Bran Extract Rosmarinus Officinalis Leaf Extract Helianthus Annuus Seed Oil Helianthus Annuus Seed Extract Hydrogenated Lecithin Cetearyl Olivate Sorbitan Olivate Behenyl Alcohol Arachidyl Glucoside Butylene Glycol Sodium Citrate Citric Acid Sodium Metabisulfite Phenoxyethanol Ethylhexylglycerin Hexylene Glycol Sodium Hydroxide Water, Dicaprylyl Carbonate, Glycerin, Triheptanoin, Ascorbyl Glucoside, 3-O-Ethyl Ascorbic Acid, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Arachidyl Alcohol, Cetearyl Alcohol, C13-15 Alkane, Ascorbyl Palmitate, Sh-Polypeptide-121, Acetyl Hexapeptide-8, Hyaluronic Acid, Zerumbone, Bacillus Ferment, Tocopherol, Tocopheryl Acetate, Butyrospermum Parkii Butter Unsaponifiables, Oryza Sativa Bran Extract, Rosmarinus Officinalis Leaf Extract, Helianthus Annuus Seed Oil, Helianthus Annuus Seed Extract, Hydrogenated Lecithin, Cetearyl Olivate, Sorbitan Olivate, Behenyl Alcohol, Arachidyl Glucoside, Propanediol, Butylene Glycol, Cetyl Alcohol, Sodium Phytate, Sodium Citrate, Citric Acid, Sodium Metabisulfite, Phenoxyethanol, Caprylyl Glycol, Ethylhexylglycerin, Hexylene Glycol, Sodium Hydroxide These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Acetyl Hexapeptide-8 (also known as Argireline) is a synthetic hexapeptide that is often called a "topical Botox alternative". It works by mimicking how Botox relaxes muscles; it interferes with the signaling process that tells your facial muscles to contract. This can help soften expression lines like forehead wrinkles or crow's feet over time. The comparison to Botox does have limits because the molecule is water-loving and relatively large. Acetyl Hexapeptide-8 has a hard time absorbing deeply enough through the skin's outer barrier to actually reach the muscles. So whether it truly works the way Botox does at a biological level is still up for debate, but early clinical outcomes are fairly encouraging. A 12 week human study of a multi-ingredient regimen containing this ingredient saw: While some studies have observed improvements in wrinkle appearance, it is important to note that more consistent results are seen in multi-ingredient formulations (vs just Acetyl Hexapeptide-8 alone). Some research studies also used higher concentrations (up to 10%) while this ingredient is usually found in concentrations up to 0.005% in leave-on formulations. 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). Cetyl Alcohol is a fatty alcohol. Fatty Alcohols are most often used as an emollient or to thicken a product. Its main roles are: Though it has "alcohol" in the name, it is not related to denatured alcohol or ethyl alcohol. The FDA allows products labeled "alcohol-free" to have fatty alcohols. This ingredient may not be fungal acne safe. It is a primary fatty alcohol with a chain length above 12 carbons. A study from 2019 show Malassezia can feed on fatty alcohols in this range, so it may trigger fungal acne in those prone to it. 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. Just know very high concentrations (>40%) can feel tacky i