Apparatus (10) is provided, including a skin-application portion (30), configured to move across a skin surface (75) of a subject. At least one acoustic element (80) is coupled to the skin-application portion and configured to be placed in acoustic contact with the skin, and to apply ultrasound energy to the skin. Additionally, at least one hair removal element (20) is coupled to the skin-application portion and removes hair from the skin of the subject. Other applications are also described.
