Givenchy have unveiled their latest beauty innovation - a lipgloss that can change colours. The new gloss, named "Gloss revelateur by Liv, Lively Pink" hits stores on August 20th. Although the gloss looks clear, when applied to lips, it reacts with your lips PH to create a custom pink shade that suits you and your skintone - so it eliminates the need for pondering about what shade to choose. The product also aims to leaves lips smoothed, plumped and tinted in your very own custom pink colour. The amazing design will retail for $25.50 upon its release.