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 retinol in the formula also helps address discoloration and dullness, for overall brighter and more even-toned skin. —Alanna Martine Kilkeary, Glamour, 6 Mar. 2026

Retinal, which is different from retinol, is considered one of the most effective over-the-counter retinoid forms for improving fine lines, texture, and uneven tone. —Iman Balagam, Vogue, 3 Mar. 2026

This serum stick can be used daily, although if this is your first time using a retinol product, consider starting with an every-other-night application. —Rebecca Jones, Southern Living, 3 Mar. 2026

The formula’s retinol, ginger, and citrus increase the production of both collagen and elastin and improve circulation, thus reducing puffiness and dark circles. —Tamim Alnuweiri, InStyle, 27 Feb. 2026

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