The 111SKIN Y Theorem Bio Cellulose Facial Mask is a deeply soothing and reparative sheet mask designed to strengthen, hydrate, and revitalize stressed or post-procedure skin. Made from advanced bio-cellulose material for superior adhesion and ingredient delivery, this mask is infused with the brand’s signature NAC Y²™ complex, along with amino acids and antioxidants, to help reduce inflammation, support skin regeneration, and restore a healthy, radiant glow. Ideal for sensitive, dehydrated, or compromised skin, it delivers instant comfort and leaves the complexion visibly plumper, smoother, and more resilient.