squalene

noun

squa·​lene ˈskwā-ˌlēn 

: an acyclic hydrocarbon C₃₀H₅₀ that is widely distributed in nature (such as a major component of sebum and in shark-liver oils) and is a precursor of sterols (such as cholesterol)

Examples of squalene in a Sentence

Recent Examples on the Web

In addition to prebiotics, it’s packed with squalene, olive fruit and camelina seed oil, and a variety of antioxidants, including turmeric, watermelon, apple, and beet extracts. — Laura Lu, Parents, 1 July 2026

Its heavy nature also causes oils to build up in pores, causing acne and breakouts, which other established moisturizing ingredients, like ceramides, petrolatum, squalene, glycerin and shea butter, are less likely to do. — Mary Walrath-Holdridge, USA Today, 18 June 2026

The deeply moisturizing squalene and hyaluronic acid provided instant results—my skin was immediately glowy and brighter. — Irene Richardson, InStyle, 6 June 2026

Not only does the product neutralize dark circles, but its mixture of hyaluronic acid and squalene leads to ultra-hydration. — Izzy Baskette, PEOPLE, 28 May 2026

Word History

Etymology

International Scientific Vocabulary, from Latin squalus, a sea fish — more at whale

First Known Use

1916, in the meaning defined above

Medical Definition

squalene

noun

squa·​lene ˈskwā-ˌlēn 

: an acyclic hydrocarbon C₃₀H₅₀ that is widely distributed in nature (as a major component of sebum and in shark-liver oils) and is a precursor of sterols (as cholesterol)