Looking for a little advice please - I have a client booked in for a brow wax and tint. She has very fair eyebrows and blond/ strawberry blonde coloured hair. Her eyebrows have always been quite sparse too. I was wondering what would be the best tint colour for her - I use Beautiful Lashes & Brows and have natural, medium brown and dark brown. Would i be better to mix a it of natural and medium brown together? Dark brown is going to be too much for her