Instructions:Go to the bottom of the page and click on the 'Save £1' link to get the voucher.
Available to buy at Tesco, Boots, Sainsburys, Asda, Superdrug, Morrisons and other stores nationwide.
Also, here is some info on their products if you've never heard of them (I've not!):
Terms and Conditions
To the Customer: this coupon can be used in part payment of £1 for any Mitchum deodorant product. One coupon per product. No cash alternative. Not to be used in conjunction with any other offer. Expires: 01.04.09