Hair grows at an average rate of around half an inch per month. This rate can vary depending on age, genetics, hormones, and lifestyle. Hair growth typically slows down as we age, and some men and women may experience partial or complete hair loss due to genetics or hormone imbalances. Diet and lifestyle also play a role in how quickly does hair grow. Eating a balanced diet with plenty of vitamins, minerals, and proteins can help promote healthy hair growth. Additionally, avoiding harsh chemical treatments and heat styling can help keep hair healthy and promote faster growth.