Hi all. So I've been doing spiral perms on this client for years. They always turn out perfect. I went on maternity leave for a year and when I did her perm in oct it didn't take at all!! She hadn't gone anywhere else, had just left it to grow til I was back. No colors at home or salon the whole time I was gone. And only medicine change was that she stopped taking Prozac. My product and technique didn't change. I just can't figure it out. We've done tests strands since then and still won't take. I switched her from Moroccan oil shampoo and conditioner to AG daily shampoo and conditioner thinking she might have too much protein in her hair but it's been 4 months and still no change. Any advice would be appreciated. Thx