Hair growth question?

hi, i plan on growing my hair, to get dread locks. i started growing my hair back in march of this year. its growing but its uneven. Ive tried alot of products and right now im using doo gro hair growth oil and the vitalizer. does anyone have any other suggestions to use for faster hair growth. doo gro hasnt been working that well for me. And ive been taking vitamins twice daily morning/night