100% Mulberry Silk Eye Mask Sleeping Blocks Light Helps Dry Eyes Natural Fiber. Fusion5 glossy sleep mask has Long silk fibres which are less absorbent helping your skin to maintain its natural moisture level. The extra moisture keeps your skin hydrated and can help to reduce all those unwanted lines, wrinkles, and dark circles. Sleep with confidence, designed to block out as much light and distraction to your eyes during your beauty sleep. This high-quality sleep eye mask is hypoallergenic with no harmful chemicals and non-toxic dyes guaranteed (STANDARD 100 by OEKO-TEX R certified). Fusion5 Silk Sleep Mask is made with 25 momme 100% finest and highest grade(6A) Long fibre/filler mulberry silk.