I used to pluck the hair on my head. Will it grow back? Is there any proven way that can make hair grow longer faster? How can I make my hair thicker?

Myth #1: Frequent trims make hair grow faster.

Truth: "Hair grows a half-inch per month, whether you cut it or not," says John Barrett, owner of the John Barrett Salon in New York City. Hair may grow slightly faster in the summer, but that has nothing to do with the stylist's scissors and everything to do with hormones, which do speed growth a little. One thing a trim will do: Eliminate split ends, making hair look better."
(Source: http://magazines.ivillage.com/goodhousekeeping/hb/health/articles/
0,,284598_290056,00.html)

"Getting Hair to Grow Faster

Here is some advice:

- Increase blood flow by gently massaging the scalp. Eat plenty of leafy green vegetables and plenty of protein. Soy (i.e. tofu) and a variety of beans is a good source of protein. Drink plenty of water. Stay away from drugs and alcohol. Keep a healthy diet. This regimen should be followed for several months as hair only grows approximately one-half inch per month. Do not comb or brush hair when wet as this causes breakage. If hair has been damaged, (perm or coloring) use a good conditioner. Try to air dry versus using a blow dryer.

- VITAMIN E

- Mane-N-Tail shampoo is used to make hair grow faster.

- To grow your hair faster wash it every week. Don’t put to many chemicals in your hair. Wrap it every night and put a silk scarf on it. Regular scarves can pull out your hair but not silky scarves.

- If you want to grow your hair fast it is good to wash and condition it at least once a day. Don't use cheap conditioner. Take niacin or other vitamins to maximize the growth potential. It is good to get a trim every 6 - 8 weeks to cut off the dead ends. It will help it grow faster.

If you're a woman, sometimes prenatal vitamins make hair and nails grow stronger and faster." (Source: http://www.faqfarm.com/Q/How_do_you_make_your_hair_grow_faster)