5 external force squeezing If the nail is squeezed by external force, it will cause the nail to deform and become warped. If the nail has the recovery function, it will automatically recover, or cut off the deformed nail that has already grown, and the newly grown nail will not be upturned. If the nail bed is seriously damaged, try to go to the hospital for repair and treatment.

6 Genetic family inheritance may lead to upward nail deformity, and nail image can be improved by proper plastic surgery.

7 water or detergent nails tend to become soft and easy to deform and tilt after being dipped in water or detergent. You should keep your hands dry. You can also wear gloves to protect your hands when doing housework.