I finally learned why you never leave foils in too long during a partial foil highlight
It was a busy Saturday at the salon in Austin, I had a client with thick dark hair wanting caramel highlights. I got distracted by a walk-in asking about a perm and left her foils in for 55 minutes instead of 35. When I rinsed, the sections came out almost white, not caramel. I had to tone them down with a warm brown toner and then add lowlights to fix the contrast. Client was patient but I felt awful, took me an extra 45 minutes to correct. Has anyone else had a timing disaster like this?