I have gone to O Salon and Oyko and George at Four Seasons and honestly, my new favorite is a local random place called Salon Roi in Woodley.
Mikey does a great job! WAY cheaper than the Gtown ones and less fancy but seriously...GREAT hair color. Looks very blond and beachy but very natural.

I've been going to Soner at O Salon in Georgetown for years. I have the same color hair as you. I used to get a baby/Swedish blonde color but lately I've been asking for more golden tones just for a change. Both look great. Unlike other colorists I've been to, he goes right to the very root of your hair, right next to the scalp, so you don't walk out with roots!

I think I posted about my hair dresser before. He's amazing with color. His name is Patrick and he's at Lux Studios in Bethesda.

My hair is a dark blonde/light brown color but has become lifeless and dull looking. I would like natural looking highlights and/or color but really want to avoid fake/brassy tones. Any suggestions in md or dc?