Barbers are licensed to cut, color, perm, shampoo, and style hair, and provide shaves. They may use tools like scissors, clippers, razors, and combs.

Clearly some kind of “powdery” element is important (critical?) to a barbershop scent. Pinaud Clubman aftershave is also a common scent element. It's worth noting that Pinaud Clubman in itself is a combination scent. Most agree it's made up of citrus (lemon, orange) and floral (mostly lavender) notes over musky base.

It really cannot be overstated how important it is to clean disinfect clipper blades if you're a professional stylist, barber, or groomer. All kinds of nasty bacteria can build up on the blades if you don't clean them thoroughly.

after they finish a cut. aftershave is an alcohol. usually in a liquid form. that's used to reduce redness.