So I was making custom hair, and I was going for long-haired trunks haircut. I was really satisfied with it, but then I went super saiyan and lets just say I’m not as satisfied. I suggest that you make a separate tab for different forms, so you can design for your hair to look in a specific way in for example ssj. It just doesn’t look good when you go super saiyan with custom hair.
Now I know that you can modify the amount your hair changes when changing forms, but that doesn’t really help. The way only way I could make my hair look good in ssj was to make it unaffected by ssj.