Erno Laszlo Firmarine Hydrogel Unisex #N/A Face Mask Hydrogel Mask: Hydrogel masks are skincare products that typically come in sheet form, made of gel-like materials. They are designed to adhere to the contours of the face, providing a close and comfortable fit. Hydrogel masks often contain ingredients to hydrate and nourish the skin. Erno Laszlo: Erno Laszlo is a skincare brand with a long history and a reputation for high-quality products. The brand is known for its personalized approach to skincare, with products tailored to different skin types and concerns.