It is quite confusing to determine whether hair grows from root or tip. But there are certain evidences which might clear your confusion. Haircut and hair color are the proofs that hair grows from the root. This is the reason why your natural hair appears after some time of hair color or permanent straightening.Any hair that you can actually touch and see is nothing but dead cells. Root is the only living part of the hair. Undoubtedly, hair grows from roots and not the tips.
Your scalp hair grows about .3-.4 mm/day or about 6 inches per year.
Hair growth or loss in human beings is neither seasonal nor cyclic in nature.
At any given time, random numbers of hair are in different stages of growth and shedding.