I have very thick 4c hair and it made it so much softer and manageable. I tried the avocado deep conditioner and it worked wonders. When it comes to growing natural hair, a question that often arises is ‘What are the best homemade deep conditioners for natural black hair growth‘.This post will address the best methods and ingredients on how to make a deep conditioner for hair growth. Best Homemade Deep Conditioners for Natural Black Hair Growth | 4B & 4C Hair / Black African Hair / Afro Hair / Curly Hair. Just make sure to really blend it. Also, I still had enough for 2x, so I stored in the freezer and it was still good for the next 3 weeks.