We want you to be able to give Woohoo a try without worrying about it not working for you, so we created our 90 Day Zero Odour / Zero Irritation guarantee. If at any time within 90 days of your first Woohoo order you are unhappy with your purchase, we'll refund you. We're confident that it will control body odour without irritation, and if it doesn't, then your deodorant is on us. Read our Return Policy.