Soin Express is a conditioning, leave in treatment from La Biosthetique. It is part of the La Biosthetique natural range, a range of Eco friendly products created from almost 100% natural sources and free from Parabens, Silicone, and Paraffin Oils. Oils from Sweet Oranges and Lady’s Smock along with natural minerals and Orange Water condition the hair, leaving it with a soft shimmer, while protecting it from environmental damage. Simply spray La Biosthetique Soin Express onto dry or slightly damp hair. Do not rinse.