I know you ladies can point me in the right direction.
I have a unit that is still lovely, still wearable, but I've decided to go darker. This is a big thing for me because I started with units in a 4/27 (when I wore braids, I was a 27 only!) then moved to a 4, and now I'm a 3. Well, after years of light hair, I decided to go with my natural hair color, which is a 2. I have a unit that's a 3, planning on darkening it to a 2. Problem is, this wavy unit is almost straight and I wanted to boil her to make her wavy again. I've done it with other units, but never had to dye those.
So, should I boil first, then dye the unit? Or dye the unit and then boil it? I'm thinking boil first, then dye, but I need your opinions and talents.