This is a ninja escape technique that allows the user to control how light is reflected around their body with chakra inflections. The technique also erases the user's scent and shadow, and is usable on any terrain, making it ideal not only for covert manoeuvres but also offensive strikes. Perceiving the user's position is possible only for ninja who are astute enough to observe minute variations within their surrounding environment, such as distortions of air currents in the immediate vicinity or distinguishing sounds, i.e. footsteps etc. The usefulness of this ability can be entirely negated by those with special vision or sensory skills, except for particularly adept users, who can completely erase even their chakra signature with it.
Despite the fact that this technique is suppose to mask the user's scent, this wasn't the case for Nagare, whose scent was picked up by Pakkun, and also wasn't the case for Karenbana, whose overuse of perfume gave away her position to Sakura Haruno.