Crafted from 100% pure mulberry silk, this pillowcase creates an ultra-smooth surface that allows hair to glide freely, dramatically reducing friction, tangling, and mechanical breakage. The result? Hair retains its natural moisture, styles last longer, and morning frizz is minimized—especially critical for textured, curly, color-treated, or fragile hair. The infusion of silver ions adds a powerful antibacterial layer, helping inhibit odor-causing and acne-triggering bacteria on the surface you rest on for hours. That means a cleaner sleep environment, calmer skin, and fewer irritation-related breakouts over time. This isn’t just luxury—it’s performance. As the final phase of Slate’s four-part system, the Silk Pillowcase helps lock in the benefits of your internal nutrition, scalp care, and daily hair routine while you rest and recover. Because healthy hair doesn’t stop at styling—it’s retained, protected, and preserved overnight.