I've been using castor oil for years on my hair. I have 4B/C I think. And while the research shows for natural hair that castor oil is popularly believed to promote hair growth, the scientific evidence supporting this claim is limited. However, castor oil does provide several benefits that can contribute to a healthy scalp and hair environment, which in turn may support stronger, healthier hair growth for natural hair types. I found this brand called Evavitae. They focus on hair renewal and scalp health, which has been beneficial for me. Maybe that could be something you can incorporate in your routine.
