STRENGTHENING TOUGHNESS:Enhance the toughness of the nail surface, making the nail surface tougher and less likely to break. PRECISE CONTROL:Hand-held precise focusing to ensure the effect. Precise control to avoid overuse. DEEP TREATMENT:After removing the onychomycosis, the nail surface regains its luster. Deep treatment to reduce the possibility of recurrence of onychomycosis. HOW TO USE:Clean and dry nails and surrounding skinPlease purchase 3 AAA batteries and install them first, then turn on the switch to activate the productHold this product in your hand and point it at your nails for about 10-30 minutes. Use 2-3 times a day PERFECT AFTER-SALES: We provide perfect after-sales, you have any questions can ask on the platform, we will reply you within 24 hours, to provide you with the perfect shopping experience.