I have fine, long, color treated hair. Have seborheic dermatitis. Can I use coconut oil/ conditioner b4 washing w/ coal tar shampoo? Shampoo is harsh!

What color???????? Black? Blonde? Red? Other? Tar shampoo is not favored by many and may influence hair color because it is black. Why coconut oil? DHS makes a shampoo and conditioner for dyed hair. Why Metrogel? This is not a treatment for seborrhea. Ketoconazole, Zinc pyrethium, and Selenium Sulfide are much more popular with people treating seborrhea.