Walking into a beauty-supply store can be intimidating. All those shampoos, conditioners, gels, mousses, volumizing sprays, curl shapers, and curl relaxers can make you feel like running home and promptly shaving your head — and that’s only the hair products. But at Piedmont Avenue’s Beauty Center you can breathe easy, and keep your hair on. (The chain has several locations around the Bay Area, but this one has Yvonne Bruce, manager extraordinaire.) Orange lip gloss? No problem. The best gel for fine, curly hair? Right over here. A good product for that slept-in look? Yes, indeed. Oh, and don’t forget to get that frequent-buyer card stamped. For those of us who know Mother Nature sometimes needs help, it’s nice to know where to find it.