Design Essentials Natural Almond & Avocado Wash Day Deep Moisturizing Mask 12 oz The Design Essential Almond and Avocado Wash Day Deep Moisturizing Mask is a highly effective moisturizer with the nourishing properties of almonds and avocado that strengthens and softens hair. This repairing mask works wonders on dry hair, reducing breakage and making it easier to detangle on wash day. Application: After shampooing, apply a palm-sized amount from roots to ends and comb through with a wide-toothed comb. Leave on for up to 15 minutes. Hold under the hair dryer for maximum exposure time. Rinse thoroughly with cold water. Repeat weekly for optimal results.