Holika Holika Pure Essence Mask Sheet is a highly-adhesive sheet that infused with pure essence for everyday use. 10 options available. Can be used everyday. Suitable for sensitive skin. Green Tea: Moisturizes and soothes your skin that is affected by external stimulation and stress. Cucumber: Moisturizes dry skin, leaving it dewy. Avocado: Nourishes skin, leaving your skin elastic and firm.