Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

The INKEY List Retinol Serum Versus Isntree Hyper Retinol EX 1.0 Serum

The INKEY List Retinol Serum Versus Isntree Hyper Retinol EX 1.0 Serum Detailed comparison of The INKEY List Retinol Serum versus Isntree Hyper Retinol EX 1.0 Serum. This anti-aging serum is formulated around Retinyl Acetate and Palmitoyl Tetrapeptide-7 to sof

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

The INKEY List Retinol Serum Versus Isntree Hyper Retinol EX 1.0 Serum Detailed comparison of The INKEY List Retinol Serum versus Isntree Hyper Retinol EX 1.0 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 Bakuchiol and Retinol 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 Niacinamide Dibutyl Adipate Caprylic/Capric Triglyceride Bakuchiol 0.6% Ammonium Acryloyldimethyltaurate/Vp Copolymer 1,2-Hexanediol Hydrogenated Lecithin Betaine Hydroxyacetophenone Retinyl Palmitate 0.3% Sodium Stearoyl Glutamate Retinol 0.1% Allantoin Panthenol Adenosine Cetearyl Alcohol Disodium EDTA Stearic Acid Dipropylene Glycol Hydroxypropyl Cyclodextrin Polydextrose Ceramide NP Asiaticoside Madecassic Acid Asiatic Acid Ceramide Ns Cholesterol Phytosphingosine Ferulic Acid Ceramide As Ceramide AP Copper Tripeptide-1 Acetyl Hexapeptide-8 Palmitoyl Pentapeptide-4 Ceramide EOP Water, Butylene Glycol, Glycerin, Niacinamide, Dibutyl Adipate, Caprylic/Capric Triglyceride, Bakuchiol 0.6%, Ammonium Acryloyldimethyltaurate/Vp Copolymer, 1,2-Hexanediol, Hydrogenated Lecithin, Betaine, Hydroxyacetophenone, Retinyl Palmitate 0.3%, Sodium Stearoyl Glutamate, Tocopherol, Retinol 0.1%, Allantoin, Panthenol, Polysorbate 20, Adenosine, Cetearyl Alcohol, Disodium EDTA, Stearic Acid, Dipropylene Glycol, Hydroxypropyl Cyclodextrin, Polydextrose, Ceramide NP, Asiaticoside, Madecassic Acid, Asiatic Acid, Ceramide Ns, Cholesterol, Phytosphingosine, Ferulic Acid, Ceramide As, Ceramide AP, Copper Tripeptide-1, Acetyl Hexapeptide-8, Palmitoyl Pentapeptide-4, Palmitoyl Tetrapeptide-7, Palmitoyl Tripeptide-1, Ceramide EOP These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Butylene Glycol (or BG) is used within cosmetic products for a few different reasons: Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients. Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness. 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 in low humidity. Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine. Palmitoyl Tetrapeptide-7 (formerly Palmitoyl Tetrapeptide-3) is a synthetic peptide. Its main job is to fight what researchers call "inflammaging". "Inflammaging" is the slow, low-grade chronic inflammation that quietly breaks down collagen as we age. This ingredient calms down a specific inflammation signal in your skin cells (called IL-6). When left unchecked, this signal triggers enzymes that break down collagen and elastin. Clinical testing showed statistically significant improvements in: Studies also found the more of this ingredient used, the more your skin produces Collagen I, fibronectin, and hyaluronic acid. You'll likely see this ingredient paired with Palmitoyl Tripeptide-1 in the well-known Matrixyl 3000 complex for enhanced anti-aging effects. A 3% concentration applied twice daily for two months showed meaningful skin rejuvenation results in clinical panels. Fungal acne note: Usually a palmitic acid component can feed Malassezia in unbound form, but here is is covalently bonded to the peptide. This means it is very difficult for Malassezia to access, and therefore very unlikely to cause fungal acne. Palmitoyl Tripeptide-1 (aka Pal-GHK) is a synthetic signal peptide made of three amino acids attached to palmitic acid. That fatty acid attachment is the key: it boosts the peptide's ability to penetrate the skin barrier. This puts it closer to the dermal cells where it can actually make a difference. Once there, it acts as a matrikine, a signaling peptide that prompts fibroblasts to produce more collagen, fibronectin, and hyaluronic acid. In vit