Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

The INKEY List Lactic Acid Serum Versus Drunk Elephant Protini Powerpeptide Resurfacing Serum

The INKEY List Lactic Acid Serum Versus Drunk Elephant Protini Powerpeptide Resurfacing Serum Detailed comparison of The INKEY List Lactic Acid Serum Canada versus Drunk Elephant Protini Powerpeptide Resurfacing Serum. This smoothing serum is formulated around

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

The INKEY List Lactic Acid Serum Versus Drunk Elephant Protini Powerpeptide Resurfacing Serum Detailed comparison of The INKEY List Lactic Acid Serum Canada versus Drunk Elephant Protini Powerpeptide Resurfacing Serum. This smoothing serum is formulated around Lactic Acid to refine skin texture and brighten dull-looking skin. This smoothing serum is formulated around Lactic Acid and Sh-Oligopeptide-1 to refine skin texture and soften the look of wrinkles. Water Lactic Acid Propanediol Glycerin Sodium Hydroxide PPG-26-Buteth-26 Sodium Hyaluronate Phenoxyethanol PEG-40 Hydrogenated Castor Oil Ethylhexylglycerin Trisodium Ethylenediamine Disuccinate Agastache Mexicana Flower/Leaf/Stem Extract Water, Lactic Acid, Propanediol, Glycerin, Sodium Hydroxide, PPG-26-Buteth-26, Sodium Hyaluronate, Phenoxyethanol, PEG-40 Hydrogenated Castor Oil, Ethylhexylglycerin, Trisodium Ethylenediamine Disuccinate, Agastache Mexicana Flower/Leaf/Stem Extract Dicaprylyl Carbonate Squalane Glycine Max Seed Extract Sclerocarya Birrea Seed Oil Camellia Sinensis Seed Oil Sodium PCA Caprylic/Capric Triglyceride Borago Officinalis Seed Oil Tremella Fuciformis Polysaccharide Tocotrienols Sh-Oligopeptide-1 Sh-Oligopeptide-2 Sh-Polypeptide-1 Sh-Polypeptide-9 Sh-Polypeptide-11 Copper Palmitoyl Heptapeptide-14 Heptapeptide-15 Palmitate Palmitoyl Tetrapeptide-7 Palmitoyl Tripeptide-1 Palmitoyl Tripeptide-38 Palmitoyl Hexapeptide-12 Tripeptide-1 Pyrus Malus Fruit Extract Panthenol Sodium Hyaluronate Crosspolymer Sodium Lactate PCA Alanine Arginine Glycine Histidine Isoleucine Phenylalanine Proline Serine Threonine Valine Adenosine Nymphaea Alba Root Extract Bacillus/Folic Acid Ferment Filtrate Extract Symphytum Officinale Callus Culture Extract Dextran Oryza Sativa Bran Oil Linoleic Acid Linolenic Acid Butylene Glycol Acetyl Glutamine Coconut Alkanes Coco-Caprylate/Caprate Pentylene Glycol Isomalt Lecithin Xanthan Gum Aspartic Acid Phytosphingosine Phospholipids Glycine Soja Sterols Tocopherol Citric Acid Lactic Acid/Glycolic Acid Copolymer Polyvinyl Alcohol Sodium Benzoate Hydroxypropyl Cyclodextrin Polysorbate 20 Caprylyl Glycol Phenylpropanol Chlorphenesin Carbomer Glyceryl Caprylate Water, Glycerin, Lactic Acid, Dicaprylyl Carbonate, Squalane, Sodium Hydroxide, Glycine Max Seed Extract, Sclerocarya Birrea Seed Oil, Camellia Sinensis Seed Oil, Sodium PCA, Caprylic/Capric Triglyceride, Borago Officinalis Seed Oil, Tremella Fuciformis Polysaccharide, Tocotrienols, Sh-Oligopeptide-1, Sh-Oligopeptide-2, Sh-Polypeptide-1, Sh-Polypeptide-9, Sh-Polypeptide-11, Copper Palmitoyl Heptapeptide-14, Heptapeptide-15 Palmitate, Palmitoyl Tetrapeptide-7, Palmitoyl Tripeptide-1, Palmitoyl Tripeptide-38, Palmitoyl Hexapeptide-12, Tripeptide-1, Pyrus Malus Fruit Extract, Propanediol, Sodium Hyaluronate, Panthenol, Sodium Hyaluronate Crosspolymer, Sodium Lactate, PCA, Alanine, Arginine, Glycine, Histidine, Isoleucine, Phenylalanine, Proline, Serine, Threonine, Valine, Adenosine, Nymphaea Alba Root Extract, Bacillus/Folic Acid Ferment Filtrate Extract, Symphytum Officinale Callus Culture Extract, Dextran, Oryza Sativa Bran Oil, Linoleic Acid, Linolenic Acid, Butylene Glycol, Acetyl Glutamine, Coconut Alkanes, Coco-Caprylate/Caprate, Pentylene Glycol, Isomalt, Lecithin, Xanthan Gum, Aspartic Acid, Phytosphingosine, Phospholipids, Glycine Soja Sterols, Tocopherol, Citric Acid, Lactic Acid/Glycolic Acid Copolymer, Polyvinyl Alcohol, Phenoxyethanol, Sodium 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. 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. 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. Lactic Acid is another well-loved alpha hydroxy acid (AHA). It is gentler than glycolic acid but still highly effective. Its main role is to exfoliate the surface of the skin by loosening the “glue” that holds dead skin cells together. Shedding those old cells leads to smoother, softer, and more even-toned skin. Because lactic acid molecules are larger than glycolic acid, they don’t penetrate as deeply. This means they’re less likely to sting or irritate, making it a great choice for beginners or those with sensitive skin. Like glycolic acid, it can: Lactic acid also acts as a humectant (like hyaluronic acid). It can draw water into the skin to improve hydration and also plays a role in the skin's natural moisturizing factor (NMF) in the form of sodium lactate. Studies show it can boost ceramide production to strengthen the skin barrier and even help balance the skin’s microbiome. To get results, choose products with a pH between 3-4. Lower strengths (5-12%) focus on surface exfoliation; higher strengths (12% and up) can reach deeper in the dermis (deeper, supportive layer) to improve skin texture and firmness over time. Though it was originally derived from milk, most modern lactic acid used in skincare is vegan. It is made through non-dairy fermentation to create a bio-identical and stable form suitable for all formulations. When lactic acid shows up near the end of an ingredient list, it usually means the brand added just a tiny amount to adjust the product’s