Here is your Ivan Zoot / ClipperGuy / Andis clipper cutting tip of the week... the technical tip...
Clean Up – Clean necks and sides upward, against the natural growth direction. If the growth direction is inverted, invert the tool and clean down. Do not trim with the moving teeth against the skin. These teeth can cut if placed against the skin in the manner... this "clean up" in an upward motion.
Here is a video on sideburn trimming... I am pretty sure I mention this tip in this video.
