Brand from South Korea: mixsoon. This set of sheet masks offers a week-long routine for various skin conditions. Each mask is made with a plant-based, soft cellulose sheet material that is only 0.2mm thick, ensuring a perfect fit with no gaps to effectively deliver active ingredients. The "Thursday Tightening" variant is specifically designed for skin firming, featuring Retinol and 5 types of Peptides to boost skin elasticity and collagen production, resulting in tight and plump skin. The product has passed skin irritation tests. Each mask contains 20ml of essence.