HAIR FOOD macadamia straightening mask from Fructis. Smoothing mask with or without rinse, which is light as a conditioner, intensive as a mask and effective as a treatment. Macadamia nut nourishes dry, unruly hair. Leaves hair nourished, hydrated and without frizz. 98% of its ingredients are of natural origin. Apply to damp hair, leave for 3 minutes and rinse, can be applied to dry hair and does not need rinsing.