The truth is that your hair is basically biologically dead after it grows past the root. Trimming your hair has nothing to do with getting it to grow longer. What it does do is make your hair healthier in that it helps preven split ends. As you trim off the split end, it keeps the split root from climbing up your strand. So your hair lays flatter and is less dry. The truth is they only way to make your hair grow faster is to increase blood flow to the scalp (such as through massage) and by making sure you are nice and healthy.

No. What trimming does is get rid of damaged or split ends, so you have healthier hair, but hair grows from the root...so nothing you do to the ends will affect your rate of growth!

Great question. I have the same question, but I think it has to do with something about preventing hair breakage, and thus allowing it to grow, but I'm not sure how the whole thing works.

I have asked hair stylist this question and it really does not..for people that suffer from split ends it helps to get rid of them ..but for those of us who do not get too many split ends it is not necessary..

Trimming your hair does not make it grow in faster but it DOES make it healthier and removes the split ends.  Split ends causes your hair to break and adds to the dryness factor.  Getting regular trims and using products suited to your hair type will keep your hair healthy and manageable which will allow it to grow with less breakage.

I totally agree that trimming hair makes it healthier and does not make hair grow faster. Scalp massage and special shampoos and conditioners help it to grow. Also need to make sure you eat healthy and exercise as this gets the blood flowing.