Apparently the marketing says you wear them for 8 hrs a day for 28 days solid to see a difference...see here:
'These ingredients are massaged in to the skin through the process of friction when the garments are worn naturally
When worn over a 28 day period, for a minimum of 8 hours a day, 5 consecutive days, wearers can expect to see a 46% reduction in cellulite.
Tried and tested by The Sun readers, with a 9/10 verdict!'
Oh great......
:)