Perfect Mousse 6. 0 Light Brown is Schwarzkopf's Best-selling hair colour foam. Easy to apply, Ammonia-free. 100% Colour Intensity(among ammonia-free hair colour products). Fall in love with your new intense, even hair colour with lasting colour and shine. Perfect grey coverage. Double Care. Double Care system delivers treatment ingredients during and after colouring for an irresistible velvety touch. Contains Amino Acids and Argan Oil. Easy dosage and even application. Rich, non-dripping foam. Soft and pleasant perfume. Thoroughly enjoyable application.