Certain Dri Prescription Strength Clinical Antiperspirant， with 12% Aluminium Chloride， is the most effective antiperspirant you can buy without a prescription.Other antiperspirants may have aluminium complexes at higher percentages - but they are not the same.Aluminium Chloride is the strongest and most effective active ingredient available in antiperspirants and is the same active ingredient in many prescription formulations.Aluminium Chloride is the #1 doctor recommended active ingredient for excessive sweating and is why Certain Dri Prescription Strength Clinical Antiperspirant Roll-On is different from the rest.<br>Important InformationIndicationsAntiperspirant<br>IngredientsACTIVE INGREDIENTS: Aluminum Chloride 12.0%; INACTIVE INGREDIENTS:: Polyacrylate Crosspolymer-6; Sodium Hydroxide; Water<br>DirectionsApply to underarms only.Apply at bedtime， see package insert.Apply sparingly.Apply only a few strokes under each arm.For maximum protection and efficacy， apply to each underarm before bed.This works while you sleep， to stop sweating before it starts.To reduce the risk of irritation， be sure underarms are completely dry before applying.