Atelier Medica hair bonnet: luxury redefined for your nightly routine. Infused with hyaluronic acid and marine collagen peptides, this GOTS-certified organic silk bonnet hydrates and revitalizes damaged hair. Regular use supports follicle revitalization, helping to combat thinning hair. The advanced, proprietary silk material also creates a comfortable, gentle sleep environment, all while helping to maintain hair's moisture and health. For those seeking the perfect fit, XL sizes are available to accommodate various hair types.