retinoid: meaning, definition, pronunciation and examples

No. Retinol is one specific type of retinoid (a vitamin A alcohol) often found in over-the-counter products. 'Retinoid' is the umbrella term for the entire class of vitamin A derivatives, which includes stronger prescription forms like tretinoin and isotretinoin.

No. Systemic (oral) retinoids like isotretinoin are teratogenic (cause severe birth defects) and are strictly contraindicated. Topical retinoids are also generally not recommended during pregnancy or breastfeeding. Always consult a doctor.

This is often called 'retinization.' Retinoids accelerate skin cell turnover, which can initially cause irritation, dryness, redness, and peeling. This usually subsides as your skin adapts. Dermatologists recommend starting slowly (e.g., twice a week) and using a good moisturizer.

They work by fundamentally different mechanisms. Retinoids are cell-communicating ingredients that bind to receptors inside cells. Beta-hydroxy acids are chemical exfoliants that work on the surface and within pores to dissolve debris. They can be complementary but are not substitutes.

Any of various natural or synthetic compounds related to or derived from vitamin A, affecting cell growth, differentiation, and epithelial tissue.

Retinoid is usually technical/scientific (medicine, dermatology, biochemistry) in register.

Retinoid: in British English it is pronounced /ˈrɛtɪnɔɪd/, and in American English it is pronounced /ˈrɛt̬ənɔɪd/. Tap the audio buttons above to hear it.