Rouge Dior Lipstick - 999

A polyol ester emulsifier that stabilizes water-in-oil and oil-in-water emulsions with minimal irritation. Like other polyglyceryl esters, it is valued for its mildness and is used across a range of skincare and color cosmetics.

A fatty alcohol emollient that softens and conditions skin. The CIR Expert Panel concluded it is safe as used in cosmetics, with this determination originally made in 1985 and reaffirmed in 2006.

A silicone that gives a smooth, soft feel and helps hold water in the skin. Inert and well studied.

This branched ester is a CIR-reviewed emollient used to give creams and lotions a silky, fast-absorbing after-feel. It is generally rated non-comedogenic and has not shown irritation or sensitization concerns in the available safety data.

A light synthetic emollient that gives creams a smooth, non-greasy slip, a common alternative to mineral oil in Korean formulas. It sits on the skin surface and is graded low concern in published assessments.

A mineral thickener and anti-caking agent widely used in sunscreens and cosmetics to control texture and prevent ingredient separation. CIR has reviewed silica in cosmetic use and found no basis for concern at the levels used topically.

A synthetic polymer used as a gentle exfoliant in scrubs and peeling products. It is an inert, non-biodegradable microparticle with no known skin irritation or sensitization potential when used topically in cosmetic formulations.

A plant-derived wax extracted from the Euphorbia cerifera shrub native to Mexico and the southwestern United States. It provides emollient and thickening benefits and has a long history of traditional use with no documented sensitization or irritation concerns at typical cosmetic concentrations.

This is a triester made from trimethylolpropane and isostearic acid, used as a thick, cushiony emollient in lipsticks, creams, and makeup to soften texture and add slip. It belongs to a well established family of fatty ester emollients with a low irritation history, though a dedicated CIR report specific to this ester was not located, so the evidence here leans on its close chemical relatives rather than ingredient specific testing.

An ester of palmitic acid and ethylhexanol, commonly used as an emollient and skin-conditioning agent. It is well studied and well tolerated in cosmetics.

A rich plant butter pressed from shea tree nuts, valued for softening and cushioning dry skin. It is generally well tolerated, though very rare allergic reactions have been reported and people with tree nut allergies who are cautious may want to patch test first.

An undisclosed scent blend that can contain dozens of components. The single most common cause of cosmetic contact allergy, and the blend is not itemized, so you cannot see what is in it.

A nutrient-rich oil pressed from sweet almond kernels, used to soften and condition skin. It is generally well tolerated, though people with tree nut allergies should patch test first, as it can rarely trigger allergic reactions.

Technically a liquid wax ester rather than a true oil, jojoba closely resembles skin's own sebum and absorbs without feeling greasy. It is well tolerated across skin types, including acne-prone skin, with no significant irritation or comedogenicity signal in the available data.

Trihydroxystearin is a wax like triester made by hydrogenating castor oil, used as a fine powder that thickens formulas and gives pressed powders, lipsticks, and creams a smoother glide. CIR's safety review found no skin irritation in clinical testing and no mutagenicity in Ames testing, though the raw ingredient was a mild eye irritant in animal testing, and concluded it is safe as used up to 5%.

An antioxidant that helps protect a formula and condition skin. Well tolerated.

Propyl Gallate is a synthetic antioxidant, the propyl ester of gallic acid, added in small amounts to fats and oils in a formula to slow rancidity. CIR reviewed human patch-test data and lowered its recommended safe-use ceiling over time, most recently to 0.1%, after finding the ingredient can act as a contact sensitizer at higher concentrations. Sensitization here is a documented reaction in a subset of exposed people at the higher concentrations once allowed, not a majority outcome at current permitted levels.

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