It typically takes between 1 to 2 hours for nail polish to dry completely, but hands can often be used after 5 to 15 minutes if a nail polish dryer is used. It is always best for a person to apply nail polish when there is time to allow the nails to dry fully.
The exact time for nail polish to dry will depend on the type of nail polish used, the drying method used and what type of routine was used. Most recommend using the nail polish routine of a base coat, two coats of nail polish and then a final topcoat. Those with formaldehyde-free polish will have to wait longer for their nails to dry completely.
Most nail polish lacquers available on the market today are non-toxic and will not harm people in any way. Nail polish can easily be removed at home with store bought nail polish remover.