Hyaluronic Acid Facial Serum

The base most products are built on. It carries the other ingredients and has no safety concern.

A small humectant and solvent molecule that helps other ingredients dissolve and helps skin hold water. It is one of the most studied cosmetic ingredients and is considered safe at the concentrations used in personal care products.

A humectant naturally derived from sugar beets that helps skin draw in and hold water; it has a long history of safe use with no meaningful irritation or sensitization concerns.

A humectant that holds water at the skin surface for a more hydrated look. No safety concern.

A polysaccharide produced through fermentation that thickens formulations and provides hydration. It is used across rinse-off and leave-on cosmetics with a low irritation profile, though very rare sensitivities to fermented polysaccharides have been documented.

Caprylyl glycol is a plant-derived humectant that also has mild antimicrobial properties, so it is commonly paired with other preservatives to allow lower overall preservative levels. Available data do not point to meaningful irritation or sensitization concerns at typical use levels.

A larger, gentler alpha hydroxy acid than glycolic acid, used to exfoliate and to draw in moisture. It can still cause stinging or increased sun sensitivity at higher concentrations, so daytime SPF use is sensible, but it is generally better tolerated than glycolic acid.

A gentle humectant derived from glucose. It draws water to the skin and is mild enough for sensitive skin types. Widely used in cosmetics without reported safety concerns.

A humectant that draws water into the skin. One of the best-studied, best-tolerated ingredients in personal care.

A widely used preservative, safe at the legal limit of 1% or less. Often the "paraben-free" replacement.

A preservative booster and antioxidant derived from natural sugars. Often used alongside other preservatives to enhance efficacy and extend shelf life.

A plant-derived emollient and preservative formed from glycerin and caprylic acid (coconut) that helps retain moisture and supports formula stability through mild antimicrobial activity.

Xanthan gum is a microbial-fermentation-derived polysaccharide used to thicken and stabilize textures, similarly common in food. Cosmetic panel review of this and related microbial gums found them safe as used, with no meaningful irritation signal at typical concentrations.