Up there. According to the public health network, the growth direction of eyelashes is from bottom to top. The roots of natural eyelashes are on the outside of the eyes, while the ends of eyelashes are inward. Eyelashes will be connected to natural eyelashes, and then eyelashes will extend along the growth direction of natural eyelashes, changing the length and density of eyelashes, making them look more natural and eye makeup more stereoscopic and deep.