REVIAN's light based treatment works by bathing your scalp in two wavelengths of light to help regenerate the cells that grow hair. If you have long thick hair and cover the areas of treatment they will not receive as much light. We recommend combing your long hair away from targeted treatment areas before putting the cap on so they can get the full treatment. Slightly damp hair can make this easier. There is no need to cut your hair for this treatment to work or be concerned if you want to continue to have a very short haircut.
Continue to cut your hair as you normally would for the style you want. Remember, the regenerated cells heal from the inside out and may take a few months to show new growth. You just want to avoid doing anything that might irritate your scalp or damage the skin while trying to renew it.