Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

Neutrogena Hydro Boost Hyaluronic Acid Gel Cream Versus First Aid Beauty Ultra Repair Cream Intense Hydration

Neutrogena Hydro Boost Hyaluronic Acid Gel Cream Versus First Aid Beauty Ultra Repair Cream Intense Hydration Detailed comparison of Neutrogena Hydro Boost Hyaluronic Acid Gel Cream versus First Aid Beauty Ultra Repair Cream Intense Hydration. This barrier-rep

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Neutrogena Hydro Boost Hyaluronic Acid Gel Cream Versus First Aid Beauty Ultra Repair Cream Intense Hydration Detailed comparison of Neutrogena Hydro Boost Hyaluronic Acid Gel Cream versus First Aid Beauty Ultra Repair Cream Intense Hydration. This barrier-repair moisturizer is formulated around Sodium Hyaluronate to strengthen the skin barrier and hydrate skin. This calming moisturizer is formulated around Colloidal Oatmeal and Squalane to calm redness and hydrate skin. Water Dimethicone Glycerin Cetearyl Olivate Polyacrylamide Sorbitan Olivate Phenoxyethanol Dimethicone/Vinyl Dimethicone Crosspolymer Chlorphenesin Laureth-7 Carbomer Sodium Hyaluronate Ethylhexylglycerin C12-14 Pareth-12 Sodium Hydroxide Water, Dimethicone, Glycerin, Cetearyl Olivate, Polyacrylamide, Sorbitan Olivate, Phenoxyethanol, Dimethicone/Vinyl Dimethicone Crosspolymer, Chlorphenesin, Laureth-7, Carbomer, Sodium Hyaluronate, Ethylhexylglycerin, C12-14 Pareth-12, Sodium Hydroxide Colloidal Oatmeal 0.5% Stearic Acid C12-15 Alkyl Benzoate Caprylic/Capric Triglyceride Glyceryl Stearate Se Glyceryl Stearate Cetearyl Alcohol Squalane Butyrospermum Parkii Butter Caprylyl Glycol Xanthan Gum Allantoin Tetrasodium EDTA Chrysanthemum Parthenium Extract Camellia Sinensis Leaf Extract Glycyrrhiza Glabra Root Extract Ceramide NP Eucalyptus Globulus Leaf Oil Colloidal Oatmeal 0.5%, Water, Stearic Acid, Glycerin, C12-15 Alkyl Benzoate, Caprylic/Capric Triglyceride, Glyceryl Stearate Se, Glyceryl Stearate, Cetearyl Alcohol, Dimethicone, Squalane, Butyrospermum Parkii Butter, Phenoxyethanol, Caprylyl Glycol, Xanthan Gum, Allantoin, Sodium Hydroxide, Tetrasodium EDTA, Chrysanthemum Parthenium Extract, Camellia Sinensis Leaf Extract, Glycyrrhiza Glabra Root Extract, Ceramide NP, Eucalyptus Globulus Leaf Oil These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Dimethicone is a type of synthetic silicone created from natural materials such as quartz. It is also known as polydimethylsiloxane. What it does: Dimethicone comes in different viscosities: Depending on the viscosity, dimethicone has different properties. Ingredients lists don't always show which type is used, so we recommend reaching out to the brand if you have questions about the viscosity. This ingredient is unlikely to cause irritation because it does not get absorbed into skin. However, people with silicone allergies should be careful about using this ingredient. Note: Dimethicone may contribute to pilling. This is because it is not oil or water soluble, so pilling may occur when layered with products. When mixed with heavy oils in a formula, the outcome is also quite greasy. 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. Phenoxyethanol is one of the most widely used preservatives in skincare (and for good reason!). It has a large spectrum of antimicrobial activity and especially effective bacteria, yeast, and mold while only having a weak effect on your skin's natural microbiome. On a cellular level, it disrupts the cell membranes of microbes by poking holes that make the cell leak. This shuts down the chemical reactions the microbe needs to make energy so it can no longer survive. Another perk of this ingredient is that it stays functional across a wide pH range (3-10). You'll often see it paired with boosters like Ethylhexylglycerin; one study showed that a 1:9 ratio of Ethylhexylglycerin to Phenoxyethanol damages bacterial membranes as effectively as doubling the Phenoxyethanol concentration on its own. Typical use concentrations range from 0.3-1% depending on the formula, and this ingredient is capped at 1% int the EU. Safety-wise, the fear mongering does not hold up to the evidence. The EU's Scientific Committee on Consumer Safety and FDA consider it safe as a preservative at up to 1%, including for children of all ages. Adverse systemic effe