Can anyone advise, I have a regular blow dry client with nearly 100% natural white hair and this week her hair was turning a funny yellow/brown colour instantly when I was drying it. The colour shampooed out but again after using different shampoo, different stying products and changed out my drier her hair again changed colour?? My client has recently finished a course of antibiotics. I’ve been hairdressing for 30years and have never experienced this before. I wondered if my water could be a factor but as far as I’m aware there has been no change in my supply. Can anyone advise please?
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