DOO GRO Products are developed to help repair the damage and breakage of your hair caused by chemical treatments, relaxer services, over-processing, and the harsh effects of hot combs and blow dryers. Hair grows about 1/4" to 1/2" per month. Regular use of DOO GRO will help give your hair the necessary nutrients to keep your hair from breaking and shedding while allowing your hair to continue to grow naturally. Noticeable results (1/4" to 1/2") of healthy growth should be seen within 30-60 days.