What can i use to bleach denim?

Hi, can i use flash with bleach or domestos spray bleach (multipurpose cleaner) to bleach my denim jacket? Or would that not work? I've heard you can use domestos thick bleach to bleach out but i currently don't have it. P.s. if you leave any comments on how i should buy one a bleached jacket instead of trying to do it, i wanna do some diy & i enjoy customising my clothes. Thanks :)