if your looking to desining jeans then put a bit of bleach in water to dialute it a bit an get a white cloth and dab it on your jeans, or just use your hands, but if you want to fully bleach your jeams then yes put 2 cups of bleach into your washing machine with your jeans.
thank you :D i want to design them because i accidently sat in bleach in a pair of my favorite jeans and i dont want to throw them away
No problem :) but make sure you dialute it enough so you don't burn your hands... I had to learn this one the hard way xD
put them in a washing machine with about 2 cups of clorox.