Avène Antirougeurs Anti-Redness Soothing Day Cream Versus Paula's Choice 10% Azelaic Acid Booster

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.

We don't have a description for Aluminum Starch Octenylsuccinate.

You might know this ingredient as Tinosorb S or Bemotrizinol. It is a UV filter that covers both UVA and UVB rays.

Butyrospermum Parkii Butter is a plant lipid from the fruit of the Shea Tree. It is an effective skin hydrator and emollient.

Diethylhexyl Butamido Triazone is a photostable UV absorber. It protects in the UVB and UVA II range. UV absorbers are an agent that absorbs UV rays. They protect your skin by using chemical reactions to convert UV rays into heat and energy.

Also known as Avobenzone, this ingredient is a chemical sunscreen filter that provides protection in the UV-A range.

Glyceryl Stearate is a mix of glycerin and stearic acid.

Peg-100 Stearate is an emollient and emulsifier. PEGS are a hydrophilic polyether compound . There are 100 ethylene oxide monomers in Peg-100 Stearate. Peg-100 Stearate is polyethylene glycol ester of stearic acid.

Potassium Cetyl Phosphate is the potassium salt of a mixture. This mixture consists of the esters from phosphoricacid and cetyl alcohol.

1,2-Hexanediol is a multi-tasker ingredient. It acts as a preservative to increase shelf-life and can aid other preservatives in preventing microbe growth. 1,2-Hexanediol also helps the skin retain moisture as a humectant.

4-T-Butylcyclohexanol is a fragrance.

Acrylates/C10-30 Alkyl Acrylate Crosspolymer is a synthetic polymer. It is used to thicken and improve the texture of products.

Ci 42090 is a synthetic dye created from petroleum. It is used to give a bright blue color to cosmetics, medicine, and food.

Caprylic/Capric Triglyceride is an emollient, solvent, and texture enhancer. It is considered a skin-softener by helping the skin prevent moisture loss.

Caprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.

Decyl Glucoside is a glucose-based surfactant. Surfactants help clean the skin by trapping oil, sebum, and dirt to be washed away.

Disodium EDTA plays a role in making products more stable by aiding other preservatives.

Parfum is a catch-all term for an ingredient or more that is used to give aroma to products. Parfum, or fragrance, can be a blend of hundreds of chemicals or plant oils. This means every product with "fragrance" or "Parfum" in the ingredients list is a different mixture.

Glyceryl Behenate is a fatty acid created from glycerin and behenic acid. It is an emollient and emulsifier.

Glyceryl Dibehenate isn't fungal acne safe.

Octyldodecanol is a fatty alcohol. It is primarily used to enhance the texture of products.

Pongamia Glabra Seed Oil is the fixed oil expressed from seeds of of Pongamia glabra, Fabaceae

Propylene Glycol is an odorless, colorless liquid. As a humectant, it helps skin retain moisture. It also aids in delivering active ingredients.

Sodium Dextran Sulfate is a type of sulfate.

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.

Stearyl Alcohol is a type of fatty alcohol from stearic acid. It is a white, waxy compound used to emulsify ingredients.

Ci 77891 is a white pigment from Titanium dioxide. It is naturally found in minerals such as rutile and ilmenite.

Tocopherol (also known as Vitamin E) is a common antioxidant used to help protect the skin from free-radicals and strengthen the skin barrier. It's also fat soluble - this means our skin is great at absorbing it.

We don't have a description for Tocopheryl Glucoside.

Tribehenin comes from glycerin and behenic acid.

We don't have a description for Tropolone.

Xanthan gum is used as a stabilizer and thickener within cosmetic products. It helps give products a sticky, thick feeling - preventing them from being too runny.