The second main reason for the appearance is an incorrectly made manicure. If, with manicure, due to the fault of the master or by his inexperience, mechanical damage to the skin occurred, then this can lead to the appearance of burrs. But this does not mean at all that for this reason you should refuse to care for your hands — the lack of competent and systematic care of nails and skin of the hands can also be the reason for the appearance of burrs.
