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

The formula gets its power from the dynamic duo of hyaluronic acid and retinol. —Zoë Weiner, Glamour, 25 Feb. 2025

According to users, this Neutrogena face serum reduces wrinkles and smooths fine lines due to the presence of vitamin C, retinol, and hyaluronic acid. —Toni Sutton, People.com, 25 Feb. 2025

Do not apply face tape after using strong active ingredients such as retinol, tretinoin, AHA/BHA. —Enrica Petraglia, Vogue, 25 Feb. 2025

Products formulated with active ingredients such as vitamin A (including retinol and retinoids), vitamin C, and alpha hydroxy acids [AHAs]—ingredients frequently used to address or prevent wrinkles, fine lines, and other aging concerns—would be restricted. —Kara Nesvig, Allure, 19 Feb. 2025

Word History

Etymology

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

First Known Use

1960, in the meaning defined above

Rhymes for retinol

• aerosol
• alcohol
• arbitral
• basketball
• butanol
• cannonball
• carbinol
• catarrhal
• cortisol
• ethanol
• fireball
• gasohol

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