Kérastase Oléo Relax range. The Oléo Relax range is intended for very dry and rebellious hair. The products in the Oléo Relax range are formulated to provide intense hydration but also in order to have an anti-frizz action. No more frizz thanks to Kérastase! The Oléo Relax shampoo composed of oils nourishes your hair fiber for regenerated hair. The range helps restore shine and softness to your dry hair. Small bonus for the super pleasant smell!