Hair also oxidises... like any defenceless surface exposed to open air. Hair deteriorates because of the corrosive chemical effects of free radicals, oxygen molecules altered by solar radiation and environmental pollution which attack the cuticle and weaken the hair structure. The hair loses its natural softness shine, colour and beauty. This great product moisturises, nourishes, softens, and detangles in one quick application. Smoothing the cuticle and capillary fibres, it leaves the hair with a great shine without any added weight.