Clairol Jazzings is a cellophane treatment that comes in a pink bottle. It's very simple to use because you do not need to mix anything. It is temporary, unless you apply heat, then it will last for around 6 weeks. I have dark brown hair and used the cherry red. It has a slight tint to it, very noticible in the sun.
Also, professional Nexxus has a line called Aloxxi. It's a conditioner, yet deposits color to your hair every time you use it. The longer you use it, the deeper the color. You'll see noticible results in 2 washings. This has very strong pigmentation so it can even out the tone of your hair.
Both are non damaging since there is no peroxide. Artec can be somewhat drying.