To speed up hair growth, refrain from washing it every day, eat a healthy diet, massage the scalp, get a regular trim and use care while handling hair. The rate of hair growth for the average person is about 1/2 an inch a month.
Special products designed to speed up hair growth include protein treatments, natural oils, deep conditioning treatments, supplements that promote hair growth and sprays that protect the hair from heat. Any product used to help promote hair growth should help the hair retain moisture. Additional factors that determine how fast hair grows include the weather, living conditions and age.