When a centenarian wearing a Peaky Blinders flat cap walks into a hair salon, my fear of causing offence grips me by the throat — A hair salon is where we, women, go to have our hair groomed and pampered. Cutting, styling, perming, chemical treatments (colour, straightening, highlights) — what would we do without these little indulgences in life? If our hairdresser owns or works in a beauty salon, great. We could have our manicure…