The in shower lighting treatment was easy to use and fast. You just poured it on your hair and it acts like a shampoo it makes a mousse that makes it easy to spread the product everywhere and not miss a spot. It does smell very strong like dye cause of the ammoniac and peroxide. And your hair continues to smell like so for the next day. As for the results, I do have very dark hair to begin with so I didn’t see much difference but maybe a little bit lighter and more shinny. Maybe this product is less damaging then actually dying your hair, but if I really wanted results and have lighter hair I would of bought a hair dye book. I got this product for reviewing purposes.

it didnt brighten my hair,not even the slightest.i dont get it as it did nothing.didnt even add shine.nothing.just flushed my money down the toilet.says can use once a month.this is one treatment..mabe have to use every month for a few months to notice.says it has peroxide in it? definately not worth money and time.if i would have saw even a hint if change then mabe.dont throw your money away.