Loreal Keratin Alpha Sleek Progressive Treatment 200ml The L'Oréal Professionnel Keratin Alpha Sleek Progressive Treatment is a professional smoothing treatment that transforms hair for up to two weeks of smooth, frizz controlled results. Formulated with Keratin Sleeker and amino-acid chains, this progressive Smooth Transformer delivers up to five times smoother results with two times less frizz, volume control and 77 per cent more instant shine, while helping to preserve hair integrity. The more you use it, the better the results, with performance peaking after about four weeks. It is artificial colourant free and alcohol free and suits all hair types. Up to 5 times smoother results with 2 times less frizz Progressive formula that improves with regular use Adds up to 77 per cent more instant shine and cuts styling time Artificial colourant free and alcohol free, suitable for all hair types