The new L'oreal Paris casting sunkiss jelly is basically what I think is the healthiest way to go blonde without actually having to you bleaching kits. Its summer highlights in a tube! And its very effective and fast working! The tube insists your use it on natural color, no previous colored hair, and the bottle recommends no darker then natural black but it does work on jet black hair and turns it blonde I myself had bright red hair (dyed of course) and tried to cover it up with a brown but the red seeps through the brown so its reddish -brown, and I've been using this product for 3 days and I have gotten blonde steaks in my hair. You can either use this product to completely apply it all over your hair and head to lighten all of your hair, or you can put a generous amount of the jelly into steaks in your hair, you can also ombre your hair with this, or lighten your roots, or do any lightened effect you want. Just simply take the jelly from the tube onto your hands or gloved hands, apply the jelly (dont be shy with the jelly) to the hair everywhere you'd like it, and either go sit out in the hot Sun until it dries, or blow dry it until its dry, you may have to apply it 3 times doing the steps everytime, to get the desired highlighted effect. This product is HIGHLY recommended!! I absolutely love it, and it also smells good too!