Q1. There are many kinds of mask sheet materials, which is the best?
You have to be careful about choosing a sheet mask as it sits directly on the skin. It could cause skin troubles. Use a sheet mask made of natural materials and one that’s not too thick so adheres well to the skin.
There is no absolute best. It is important to touch and try several types to find the one that’s best for your skin

Q2. Is using a sheet mask every day really good for the skin?
It depends on your skin type. If you have oily skin, it could provide too much of the nutrients and cause excessive sebum production. Choose a product that’s less oily and provides soothing and hydration. For dry skin, hydration and nourishing products are recommended

Q3. How long should I wear a sheet mask?
You may think, the longer you leave it on, the better result you will see. This is unfortunately wrong. If you leave a sheet mask for longer than 30 minutes, it could dehydrate the skin. For sensitive skin, it could also cause skin troubles resulting from too much moisture

Q4. Where and how should I keep sheet mask?
Sheet masks are generally good for 2-3 years from the date of manufacture if not opened. Keep it in a cool and dry place, not exposed to the direct sunlight.
If you want to keep it in a fridge, do not keep it straight up but lay it down. Otherwise, essence will flow down and not evenly soak into the sheet. If you keep it upright for too long, the sheet mask may crumple up