South Korea's A. by BOM Calendula Night Moisturizing Mask, the main moisturizing and hydrating mask, is a nighttime leave-in mask, you can sleep directly after applying it. It features a mask that is split in two, with two flowers in a separate package on the upper side and a spreadable mask on the lower side. How to use: After cleansing the face, stick two flowers on the cheeks for ten minutes, tear them off, apply the smear mask, and then go to sleep. Because this product contains calendula, it should be used with caution for allergic skin. When two pieces of flowers are attached to the cheeks, the immediate visual sense of hyaluronic acid duck can be seen, as shown in Figure 3. The smear-type mask is a gel texture, which is very moisturizing after smearing, and the amount is also sufficient, which can be smeared together with the neck. To sum up, this mask should be used with caution for sensitive skin. It is prone to flushing on the cheeks, and the moisturizing level is acceptable, but the smearing method is easy to rub mud, and I have to rush to wash my face when I wake up the next morning. Personally, I think the cost performance is not high.