How do concussion headbands work?

USA player Ali Krieger (11) drives against South Korea’s Jung Seolbin (12) during the friendly match between the USA and South Korea, at Red Bulls Arena in Harrison, New Jersey. After suffering a concussion during a National Women’s Soccer League game in April, Krieger decided to wear a black concussion headband. read more

It is Possible, that after sustaining a concussion, and then waiting the appropriate amount of time to return to play, that one of those head bands could reduce some of the acceleration * time that is resolved by the brain, and possibly reduce any further damage to the pre-damaged and still healing region of the brain. read more