Other forms: concealers
Concealer is a thick cream that hides marks and shadows. Dab on concealer, a colour-correcting concealer, blend the concealer.
It is heavier than foundation and used only in patches, which is why a shade too light shows as a bright ring. Green-tinted concealer cancels redness, since green sits opposite red on the colour wheel.
1nounconcealerA thick cream that hides marks and shadows.
“She dabbed some concealer on the dark circles under her eyes.”
concealer is a cosmetic.
From conceal plus -er, from Latin concelare, to hide away.
Middle English
concelare
English, today
concealer
From Middle English concelare, equivalent to conceal + er.
Etymology from Wiktionary, CC BY-SA