What happens if you don’t cut your hair for 10 years? Day 1. Nothing is visible at all. The scalp is fully exposed and the head moves freely without resistance. The hair is too short to affect movement or sensation. After one month, the hair grows to about 2–3 cm and starts becoming noticeable to the touch. Visually, it’s still subtle, but you can already feel a slight texture when moving your head or running your hand through it. At 6 months, the length reaches around 15 cm and begins to fall n