CoolTone^™ by Allergan strengthens, tones and firms muscles. CoolTone is a magnetic muscle stimulation (MMS) device that is FDA cleared for improvement of abdominal tone, and strengthening of the abdominal muscles. CoolTone is also FDA cleared to firm, strengthen and tone the buttocks and thighs. The CoolTone procedure is performed in 30 minutes, has no downtime and requires an initial series of four treatments.