The Mac 318S Brush is a retractable lip brush perfect for on-the-go. Use to apply, define or blend lipstick, lip gloss or any formula of liquid lip colour. Quickly and easily use it to define the contours of lips, fill in colour or blend out lip liner. Slide it in or out of its own Mac-style casing for speedy access and brush protection. Mac's 100% synthetic brushes incorporate the latest innovations in fibre technology for superior performance and improved longevity.