I did add some mousse and hairspray...by doing this, did I destroy my hair?! What I mean is that are these products harmful for longer hair?
As far as I know, only ones that contain alcohol, and I think nearly all of them contain alcohol in some sort of way or another. If you use it infrequently, you should be alright and it wont damage your hair, but taking into account you've dyed your hair blonde, you don't want to trash your hair anymore.
I'm not saying your hair is trash, it looks amazing to be honest, you're lucky, and I think that using mousse will be testing your luck.
Thank you, you think just one time using the stuff will hurt it?
Na, it should be fine, it's just using it again and again it does damage, I get more alcohol foolishly putting empty pint glasses and bottles of vodka on my head after a p**sup than mousses ever do!:)
Aussie makes gels, sprays, etc without alcohol.