Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

Neutrogena Hydro Boost Gel Cream Versus The INKEY List Beta Hydroxy Acid (BHA) Serum

Neutrogena Hydro Boost Gel Cream Versus The INKEY List Beta Hydroxy Acid (BHA) Serum Detailed comparison of Neutrogena Hydro Boost Gel Cream versus The INKEY List Beta Hydroxy Acid (BHA) Serum. This barrier-repair moisturizer is formulated around Sodium Hyalur

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

Neutrogena Hydro Boost Gel Cream Versus The INKEY List Beta Hydroxy Acid (BHA) Serum Detailed comparison of Neutrogena Hydro Boost Gel Cream versus The INKEY List Beta Hydroxy Acid (BHA) Serum. This barrier-repair moisturizer is formulated around Sodium Hyaluronate to strengthen the skin barrier and hydrate skin. This acne serum is formulated around Salicylic Acid and Zinc PCA to clear breakouts and refine the look of pores. Water Glycerin Dimethicone Cetearyl Olivate Sorbitan Olivate Sodium Hyaluronate Serine Glycine Alanine Threonine Arginine Proline Lysine Hcl Glutamic Acid Sodium PCA PCA Sodium Lactate Urea Sodium Chloride Citric Acid Betaine Allantoin Fructose Maltose Trehalose Glucose Pentylene Glycol Synthetic Beeswax Polyacrylate Crosspolymer-6 Dimethicone Crosspolymer Dimethiconol Ethylhexylglycerin Caprylyl Glycol Sodium Hydroxide Water, Glycerin, Dimethicone, Cetearyl Olivate, Sorbitan Olivate, Sodium Hyaluronate, Serine, Glycine, Alanine, Threonine, Arginine, Proline, Lysine Hcl, Glutamic Acid, Sodium PCA, PCA, Sodium Lactate, Urea, Sodium Chloride, Citric Acid, Betaine, Allantoin, Fructose, Maltose, Trehalose, Glucose, Pentylene Glycol, Synthetic Beeswax, Polyacrylate Crosspolymer-6, Dimethicone Crosspolymer, Dimethiconol, Ethylhexylglycerin, Caprylyl Glycol, Sodium Hydroxide Propanediol Salicylic Acid Zinc PCA Phenoxyethanol Hydroxyethylcellulose Maltodextrin Biosaccharide Gum-1 Trisodium Ethylenediamine Disuccinate Water, Propanediol, Betaine, Salicylic Acid, Sodium Hyaluronate, Zinc PCA, Phenoxyethanol, Hydroxyethylcellulose, Maltodextrin, Sodium Hydroxide, Ethylhexylglycerin, Biosaccharide Gum-1, Trisodium Ethylenediamine Disuccinate These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Betaine is a humectant. Like hyaluronic acid, it helps attract and retain moisture in the skin. It’s known for being gentle and for helping the skin maintain balanced hydration. Betaine is mainly used to improve hydration and support calmer skin. It helps skin cells regulate water balance because it functions as an osmolyte. Some studies suggest betaine may support making skin tone more even. Fun fact: Betaine naturally exists in the skin and the body. In cosmetic products, it can be either plant-derived (most commonly from sugar beets) or synthetically produced for consistency and stability. Betaine is also known as trimethylglycine. 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. Sodium Hyaluronate is the salt form of hyaluronic acid. It is a long sugar chain that is naturally found in your skin, joints, and connective tissue that maintains hydration and elasticity. In skincare, it works as a humectant. It pulls water from the environment and deeper layers of skin and binds it to the surface. Interestingly, the size of the molecule affects its behavior: Some clinical evidence links low molecular weight versions to improved wrinkle depth, elasticity, anti-inflammatory effects, and barrier repair. Many serums use a blend of both weights so you can get surface hydration plus longer-lasting and deeper effects. You'll typically see concentrations between 0.1-2% for this ingredient. Sodium Hydroxide is also known as lye or caustic soda. It is used to adjust the pH of products; many ingredients require a specific pH to be effective. In small amounts, sodium hydroxide is considered safe to use. However, large amounts may cause chemical burns due to its high alkaline. Your skin has a natural pH and acid mantle. This acid mantle helps prevent harmful bacteria from breaking through. The acid mantle also helps keep your skin hydrated. "Alkaline" refers to a high pH level. A low pH level would be considered acidic. Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product. So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation. You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Remember to stay hydrated!