Reynaldo Arroyo donated his cut hair to charity (Picture: Salt Lake City Army Recruiting Battalion).
You may have heard of the saying: "Long hair. Don't care."
Well, the US Army does care.
That is why a 23-year-old military recruit in the United States had to have his hair cut for the first time in 15 years.
Reynaldo Arroyo filmed the moment he had more than 20 inches of hair chopped off and then styled to conform with Army regulations.
Before then, Reynaldo Arroyo had not had his hair cut since he was eight years old.
Watch: The moment Reynaldo has his first haircut after growing it for over a decade.
For him to be able to enlist as an infantryman, US Army regulations state: "The requirement for hair grooming standards is necessary to maintain uniformity within a military population.
"Many hairstyles are acceptable, as long as they are neat and conservative.
"It is the responsibility of leaders at all levels to exercise good judgment when enforcing Army policy.
"All soldiers will comply with hair, fingernail, and grooming policies while in any military uniform, or in civilian clothes on duty."
Speaking ahead of the big cut he said he was "really excited to be enlisting in the Army".
Reynaldo donated his cut hair to Locks of Love, a charity that makes wigs for Canadian and American children who have lost their hair permanently due to medical conditions.