Stay All Day Waterproof Liquid Eye Liner (Intense Black)

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

A synthetic polymer used to form a water-resistant film and keep chemical UV filters evenly suspended in sunscreen lotions. It is not absorbed through skin and CIR has not flagged it as a safety concern in cosmetic use.

A lightweight humectant and solvent similar in role to propylene glycol, used to carry actives and give lotions a lighter feel. CIR has reviewed it and considers it safe as used in cosmetics.

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

A fast-evaporating solvent used to carry actives and give toners a light, "clean" feel; at the concentrations used in classic astringents it can be genuinely drying or irritating with repeated use, especially on dry or compromised skin, though it is not inherently toxic and is a normal, well-studied cosmetic ingredient.

A preservative that keeps products free of mold and bacteria. Reviewed repeatedly and considered safe at the low levels used.

A member of the paraben family used to prevent microbial growth in cosmetics. Like methylparaben, it has been reviewed extensively and found safe at the concentrations used in leave-on and rinse-off products.

Sodium dehydroacetate is a preservative that fights bacteria and fungi in water-based formulas, typically used alongside other preservatives at up to 0.6% (as the acid) and not permitted in aerosol sprays. CIR's panel has reaffirmed since 1985 that it's safe as used, based on it being practically nonirritating and nonsensitizing across many clinical tests, though the panel has also noted a small number of published hypersensitivity case reports set against very widespread use.

A chelating agent that binds trace metal ions to keep formulas stable and preservatives working properly. It is not a functional skincare "active" and only a very small amount is used, with minimal skin penetration expected.

A strong alkali used in tiny amounts to adjust the pH of cosmetics to safe, skin-friendly levels. At the pH found in finished products, sodium hydroxide is neutralized and well tolerated.

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.

A mineral UV filter and white pigment used in sunscreens and makeup. It sits on the skin surface rather than being absorbed, and major regulators consider it safe for topical cosmetic use.

Mineral pigments used to add color to cosmetics. Iron oxides are FDA-approved colorants with a well-established safety record in cosmetic formulations.