Because the mucus membrane is very thin (and populated by a copious amount of blood vessels), laser light is able to irradiate the blood flowing through the nostrils with almost zero attenuation…and that’s where our radiation absorbing head for the SL-1800 comes into play.The head is placed on the Safe Laser 1800, which is then placed into the nostril and switched on for 3 minutes, after which time the laser is switched off and moved to the other side for another 3 minutes.Benefits at a Glance: ✔ Normalizes blood pressure ✔ Prevents the development of cardiovascular diseases ✔ Boasts an extremely beneficial effect in the prevention and post-treatment of circulatory disorders including heat attacks, strokes and thrombosis ✔ Reduces or eliminates the harmful levels of adhesion of red blood cells (blood clotting) ✔ Helps maintain and restore healthy blood circulation, thereby improving the blood and oxygen supply to the organs ✔ Reduces high blood fat and cholesterol levelsHelps increase the blood flow in cases of arteriosclerosis and vasoconstriction25mW continuos power - 3min/4 Joule energy