A nail polish application system may include a nail polish applicator to apply a curable nail polish to a nail of a user. An energy source may emit energy to selectively cure the curable nail polish. A sensor may be provided to detect a boundary of the nail of the user. The energy source may be configured to direct the energy to (i) the detected boundary of the nail during a first curing stage or (ii) to an area within the detected boundary of the nail during the first curing stage, and to (iii) avoid directing the energy to an area outside the detected boundary of the nail during the first curing stage.