The beauty secret of celebrity hairstylists, dermatologists and beauty experts. You asked. Slip listened. The Pure Silk Contour Sleep Mask is designed to protect your delicate lashes. Slip Pure Silk products are made using slipsilk, developed and refined for over ten years to provide the ultimate combination of shine, thickness, softness and durability. In laboratory testing, slipsilk pillowcases were shown to absorb significantly less face cream than cotton pillowcases,* so they can help keep your skin's moisture and valuable face and hair products where they belong, on your face and hair. Slipsilk was also shown to create 43% less friction on average,* which can reduce stretching and tugging on delicate facial skin. The Pure Silk Contour Sleep Mask has been specifically designed with delicate eyelash extensions in mind. The shape of the contour on the inside of the sleep mask has been designed to sit away from your eyelids and allow additional space for your eyelashes to sit while you get your beauty sleep. While Slip has made all efforts to design the Pure Silk Contour Sleep Mask to be suitable for eyelash extensions, Slip acknowledges that not all lashes are the same and this contour sleep mask may not be suitable for all lengths or types of lashes. Slip encourages you to use your own discretion in deciding whether the Pure Silk Contour Sleep Mask is suitable for you.