Light brown and Caramel hair color are options to going lighter for natural dark brunettes. As I show here in my blog 3 different clients of mine who are dark brown naturally and become various shades of amber/caramel and some with honey type highlights to break up the tone and give dimension.
These are some of my favorite colors to make a brunette lighter without becoming a typical blonde. There are already tons of blondes on the streets why not be a warm, pretty, caramel brunette or warm dark caramel blonde? No need to bleach it or use harsh chemicals.
I go in with an organic based hair color and I formulate to counter the brassy tones when lightening. The trick is to not go more than 2 to 3 levels lighter. The lighter you go with the base color the more brass you will fight. I like to “bust the base” then go in with a few foils and lighten some pieces then do a color gloss overlay. This locks in the color and helps fight the brass. As brunettes can also pull brass. Embrace the warmth but you need a professional to pull this off. To make a dark, dark brunette look like a caramel brunette, to dark blonde you need a pro to do this and make it natural. It is truly too complex than just getting a box of color at the store and trying to do this at home.
The caramel to amber brunette is a color to boost you during Summer and a great fall color to carry. I took these pix of my clients in natural light as I dig how the color reflects to indoor and outdoor light. Warm, soft, rich color that reflects. Like my friend and client here just walking in a parking lot I loved how her hair just shows the warmth and shine.