LED head lamp that produces green light at 555nm, perfect light gradation to avoid the activation of chlorophyll photosynthesis. When growing indoors, one of the most important tricks is to avoid disturbing the night cycle of the plants, avoiding turning on lights, opening windows or the growbox. However, sometimes it is necessary to work inside the growbox during the night cycle. This is the reason for a light specially designed to produce light at a single luminous temperature: 555nm (intense green) which is the only light color that plants do not see.