PrimaDry is optimal for pit and fissure drying and preparation. It contains 99% organic solvents and 1% primer. PrimaDry rapidly volatilizes moisture content of pits and fissures after rinsing off etchant with water spray and air drying. The ultrafine primer film allows UltraSeal XT® plus to flow perfectly into every pit and fissure. It is also useful prior to placing composite repairs. Do not use on dentin.