I bought the Loreal Elnett 3 days volume heat styling spray i have used the 3 day straight one and loved it so i know i would love this too! Now i don't know if it does last 3 days as i can't go that long without washing it but it does give pretty good volume if you have flat hair like me, just spray this on you're hair brush through and blow dry as normal and if you want added volume use a round brush especially at the crown also if you like put you're head upside down.
Results: Voluptuous bouncy hair and it also keeps flyaways at bay!
As i like to backcomb my hair (not all the time though) I like to use a hairspray that has staying and boy oh boy does Schwarzkopf's got2b blasting freeze spray does as it says! My hair does not move not one tiny hair. I usually only use this if i am going on a night out as i know it will last all night well aslong as i am out for ;) You do have to make sure you hold this abit away from you're hair or you will end with that crispy feeling and that is not a good look! It does brush out easily enough though, so if you are looking for a really strong hold hairspray then i would definitely recommend this one :)
Have a fab weekend whatever you do!