CBD to the scalp should help with inflammation, considering it scientifically can reduce blood pressure.
Do bare in mind, it can be pricey in lotion form.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2828614/
Cannabinoids are potent anti-inflammatory agents and they exert their effects through induction of apoptosis, inhibition of cell proliferation, suppression of
cytokine production and induction of T-regulatory cells (Tregs). In this review, we provide an in-depth description of all four different mechanisms and we further discuss the immunosuppressive properties of cannabinoids in the context of inflammatory and
autoimmune disease states, triggered by cellular rather than humoral components of the immune system.