lanolin

noun

lan·​o·​lin ˈla-nə-lən 

: wool grease especially when refined for use in ointments and cosmetics

Examples of lanolin in a Sentence

Recent Examples on the Web

The formula is petroleum-free and powered by ultra-refined lanolin (an ingredient that mimic the skin’s own lipids) that helps replenish the barrier, soften rough patches, and restore suppleness. —Kiana Murden, Vogue, 2 Mar. 2026

This assortment includes the cult classic 101 Ointment, which contains the brand's only ultra-medical-grade lanolin. —Tory Johnson, ABC News, 21 Feb. 2026

Vanicream Moisturizing Skin Cream With Pump Dispenser For those with eczema or sensitive skin, Vanicream’s original moisturizing cream is free of all the usual irritants—dyes, fragrance, masking fragrance, lanolin, parabens, and formaldehyde releasers. —Melanie Fincher, Southern Living, 6 Feb. 2026

When choosing a moisturizer, steer clear of occlusives such as petroleum jelly and lanolin and use only emollients, which include ceramides and squalane, adds Dr. Taub. —Tatiana Boncompagni, InStyle, 22 Jan. 2026

Word History

Etymology

Latin lana wool + International Scientific Vocabulary -ol entry 3 + -in entry 1

First Known Use

1885, in the meaning defined above

Kids Definition

lanolin

noun

lan·​o·​lin ˈlan-ᵊl-ən 

: the fatty coating of sheep's wool especially when purified for use in ointments and cosmetics

Medical Definition

lanolin

noun

lan·​o·​lin ˈlan-ᵊl-ən 

: a yellowish sticky unctuous mass of refined wool grease that can be absorbed by the skin, contains from 25 to 30 percent incorporated water, and is used chiefly in ointments and cosmetics

called also adeps lanae, hydrous wool fat