The MEDIHEAL Collagen Essential Sheet Mask Core Firming is a MEDIHEAL sheet mask designed for mature skin seeking enhanced firmness. The essence-infused sheet mask delivers intense hydration and active ingredients to the skin in a short time. Plant-based vegan collagen (hydrolyzed extensin) and hyaluronic acid help the skin appear fuller and smoother. Note: The product contains elastin and is therefore not vegan. MEDIHEAL is a Korean skincare brand from L&P Cosmetic (manufactured in South Korea).