retinol

noun

ret·​i·​nol ˈre-tə-ˌnȯl 

-ˌnōl

: the chief and typical vitamin A C₂₀H₂₉OH that is a highly unsaturated alicyclic alcohol used in various forms in medicine and nutrition

Examples of retinol in a Sentence

Recent Examples on the Web

Its high concentration of 0.2% pure, slow-release retinol firms skin and smooths out fine lines without stinging or causing sensitivity. —Sarah Han, Allure, 29 Nov. 2024

These skincare gems are infused with retinol and hyaluronic acid, providing your skin with a bright and refreshed look with each use. —Mia Meltzer, Rolling Stone, 26 Nov. 2024

Try Nourish All Night with hyaluronic acid and retinol to visibly lock in moisture, hydrate and plump. —Chloe Castleberry, Flow Space, 18 Oct. 2024

Kate Somerville’s rich and creamy formulation, aimed at firming and brightening the skin, contains 100% pure retinol that’s encapsulated in volcanic soil. —Jenny Berg, Vogue, 31 Oct. 2024

Word History

Etymology

retin- + -ol entry 1; from its being the source of retinal

First Known Use

1960, in the meaning defined above

Kids Definition

retinol

noun

ret·​i·​nol ˈret-ᵊn-ˌȯl 

-ˌōl

: the most common form of vitamin A

Medical Definition

retinol

noun

ret·​i·​nol ˈret-ᵊn-ˌȯl  -ˌōl 

: vitamin a sense a