Lip Medex

A naturally occurring compound from peppermint and other mint plants that creates a cooling sensation and may have mild antimicrobial properties. It is generally safe in rinse-off products and low concentrations but can irritate or sensitize some individuals, particularly in leave-on formulas or higher amounts.

A cooling counterirritant used in scalp tonics, lip balms, and muscle rubs. The tingle is the ingredient working on nerve endings, not a sign of damage, but higher levels can genuinely irritate, and sensitive or broken skin is better off without it.

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 natural wax derived from sheep wool, known for its rich emollient properties and ability to reinforce the skin barrier. While generally well tolerated, lanolin is a recognized contact allergen for some individuals; those with wool sensitivity or lanolin allergy history should patch test before use.

A refined cellulose derivative processed from plant sources, used as a thickener and texturizing agent in cosmetics. It is an inert polysaccharide with no known sensitization or irritation potential and is widely used in personal care and pharmaceutical formulations.

An ester formed from myristic acid, used to provide emollient and conditioning effects. Long track record in cosmetics with well-established safety in topical applications.

A time-tested occlusive that seals in moisture and helps damaged skin heal, widely used in dermatology for wound care. Cosmetic-grade petrolatum must meet purity standards that remove the polycyclic aromatic hydrocarbons found in crude sources, and it is considered one of the most effective and well-studied barrier ingredients available.

A plant-derived emollient oil rich in ricinoleic acid, used in skincare for decades. Contact allergy has been reported but is uncommon relative to how widely it is used in leave-on products.

A rich, solid-at-room-temperature butter extracted from cocoa seeds, valued for its intense emollient and conditioning properties. While generally well tolerated, it carries a higher likelihood of comedogenicity, so people with acne-prone skin may want to opt for lighter alternatives.