Oral supplementsOne of the best supplements you can take for hair growth is vitamin D, says Dr Nathan. It involves drawing a patient’s own blood and recirculating processed, enriched cells back into the scalp to stimulate hair growth. She adds that you could consider lasers as well, and as a last resort for more serious hair loss, there’s surgical hair transplants. “If people want to intervene [with hair loss], early intervention is key,” says Dr Khetarpal. But Dr Garshick says this is all dependent on what caused that hair loss and how early you’re able to catch it.