The teeth of the comb are specifically designed to apply pressure along acupoints on the scalp as you comb through your hair. Repetitive combing releases tension along the scalp and stimulates blood circulation, which allows the scalp meridians to flow freely. By brushing their scalp for 25 seconds before bed, many patients have found relieve with stress, anxiety, and insomnia. It is advised to brush until the scalp feels warm and tingling for best results.