I went into boots today to print off my points statement and received a third off voucher for deodrant. Seeing as the Dove invisible dry deodrant is currently £1.07 down from £2.15 I went for that. Turned out that instead of 1/3 off i got 2/3 off making it just 35p!
So you will need a boots advantage card and will need to print off the vouchers at the advantage card machines. Bargain for 35p!