Eiko Hirayama, an 80-year-old Japanese woman writer, has a smooth and delicate face without even a wrinkle. What is the secret? She said, "I never use cosmetics. I totally rely on the natural beauty product loofah. Wipe your face with gauze dipped in loofah water every morning for decades. My mother taught me this. She lived to be over 90 years old, with almost no wrinkles on her face. The preparation method of the loofah water is as follows: the growing loofah stems are cut off 60 cm from the ground, the vines on them are discarded, the cut of the stems left on the ground is bent downwards, inserted into a clean glass bottle, wrapped with a circle of absorbent cotton at the bottle mouth, and then wrapped with aluminum foil skin. Then fix half a bottle in the soil, so that the loofah juice can flow into the bottle smoothly. Then, collect the overnight loofah water, filter it with gauze and wipe your face directly. You can also wipe your face with fresh loofah juice on weekdays, which can also reduce wrinkles.