There is no scientific basis for whether bigger or smaller finger crescents are better, and the size of a finger crescent varies from person to person. Finger crescent is a natural phenomenon formed during the growth of nails, the methyl will continue to make new keratin cells, these new cells will push the old keratin cells to grow forward, the old cells will gradually die, harden, and form a crescent. The size of the crescent varies from person to person. Some people have larger crescents, some have smaller crescents, and some have no crescents at all. Finger crescents are related to the body’s metabolism. If the nails wear out faster, the finger nails will naturally grow faster, and the crescents will be pushed out easily, therefore, they will be more visible. If the body is malnourished, the nail does not have enough nutrients to make new keratin cells and the crescent will slowly disappear. If the crescent appears to become smaller or larger in a short period of time, this time needs to be taken seriously, the body may have metabolic abnormalities, such as hypothyroidism and hyperthyroidism. If the crescent moon suddenly appears abnormal, you should go to the hospital in time to avoid adverse effects.