in short, not enough to warrant paying the prices that they ask for them. they will help a little bit, but don't expect a short lived scent to all of a sudden turn into an all day affair. i'd recommend getting roll on bottles and reappplying....that's what i do. though i will say that some scents, m7 and burberry touch being at the forefront, i prefer in the shower gel forms. they accentuate different notes. m7 is much drier and woodier in the shower gel.