root colour

Hi all 😊 I have one client who gets a dark band when we do her root. I’ve been applying the same colour for a year now and sometimes it does it, sometimes not. I have been applying a 55.0 with 20vol. Her hair is super thick, she has a keratin blow dry every 3 months and is a level 5/6...

Hi all! Hope you’re all well? I have a client coming in December, she has around 3 inches of root growth. She’s a natural level 5 but she usually lifts to a clean 9 (she’s always had a full head of back to back highlights) She’s sent me this photo of what she wants. I’m thinking full head of...