Just about every insect will clean itself before moving to another flower. This little Sweat Bee is doing some antenna maintenance.
Tech Specs: Canon 70D (F11, 1/250, ISO 100) + a Canon MP-E 65mm macro lens (3x) + a diffused MT-24EX (both flash heads mounted to the Canon flash mount, 0 FEC). This is a single, uncropped, frame taken hand held.
Technique: It was very windy, so windy that the bee couldn't tell that I had grabbed onto the flower's stem with my left index finger and thumb. I then carefully rested the lens on that same hand to keep everything steady.