EXP Boosters

[kabutogrimmjow111]

I was wondering if you could buy like two 1 day 100% exp boosters and use them at the same time then make it 1 day 200% exp boosters.Can somone plz answer this fast I need to know so I don't waste my SC?

[Simmy]

Any EXP boosters from Spark Shop (1 day, 7 days, 28 days) don't stack.
Only one can be used during the duration of your current EXP booster.