Revolution 24 Day & Night Brow Pen Dark Brown24 Hour Day & Night Brow Serum & Pen Duo in Dark Brown by Revolution Pro- Skimpy or sparse brows? Meet your new brow must-have to create the arch you\'ve always desired- This build and grow serum duo contains a pen on end and serum on the other- The innovative shark-tooth tip of the pen effortlessly fills in any sparse areas- The night serum is enriched with millet seed extract that helps make brows appear longer and thickerHow To Use:• Apply pen with a light touch, letting the shark-tooth tip create the appearance of hairs and building to create the \"must have\" micro bladed finish• Run the clear end of the pen through clean brows and the surrounding area at nightRevolution Pro are 100% cruelty free