Sheet masks are a popular skincare product designed to hydrate and nourish the skin. They are made from materials like cotton or hydrogel and are soaked in a serum filled with beneficial ingredients. When you place a sheet mask on your face, it creates a barrier that helps the serum penetrate deeply, providing intense moisture and targeting specific skin concerns like dryness or dullness. Using a sheet mask is simple and relaxing. Just cleanse your face, apply the mask for about 15-20 minutes, and then remove it. You can find sheet masks infused with various ingredients, such as hyaluronic acid, vitamin C, or collagen, making them suitable for different skin types and needs.