Builder gel
A thick gel used to add length, strength and an arch.
Heavier than gel polish and made to be sculpted: it holds its place long enough to be shaped before the lamp sets it. Sold as a pot or in a bottle with a brush (often called BIAB — builder in a bottle).
Used over the natural nail it is an overlay; over a tip or form it becomes an extension.
Also called: BIAB, builder in a bottle, hard gel
Read next