2. Enhance the sensitivity of finger touch and assist hands to grasp, hold, pinch and squeeze;
3. Enrich the blood supply of nail bed and regulate the peripheral blood supply and body temperature.
Nail is a flat nail structure on the back of human fingertip, which refers to the product of keratinization of the terminal epidermis and plays a role in protecting fingertip.
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The characteristics of healthy nails that can work are as follows:
Healthy nails are rectangular or square, and the length of nails accounts for about half of the first knuckle. Nails are translucent pink with no other colors or spots or stripes. Press the nail body hard to make it white, and then return to light red after loosening. Healthy nails are uniform in color and shape, with extremely fine parallel longitudinal stripes.
Nails have certain elasticity and appropriate thickness. Children's nails are thinner and softer than those of adults, while the nails of the elderly are thicker.
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