This Insect Ninjutsu is very similar to the Body Replacement Technique, the user creates a thin layer of Chakra that hardens, right when needed to activate the user pulls themselves out of this film of Chakra completely solidifying it and leaving a shedded skin. This technique is very popular amongst Insect using ninjas. The Mushi Butai of Kusagakure use this as a requirement entry into their squad.