New to hendigo need help with amounts for roots
I purchased the Ancient Sunrise dark brunette kit and I want to touch up my roots. I have medium brown hair with 50% gray but want it to be dark brown with little to no red. I have read to use 1 part henna to 2 parts indigo with the henna mixed with 25% amla, but I'm not sure what that actually translates to. So I'm wondering if I'm doing this correctly. Would these be the correct ratios? And how much for just roots? Thank you!
henna = 2 tbsp
amla = .5 tbsp
indigo = 1 tbsp