When Beyoncé emerges onstage during her “Renaissance” tour, she is a magnificence of hair. She’s also a magnificence of sequins, over-the-knee boots, vocal agility, swagger, and total command of plus or minus 70,000 screaming, weeping, hyperventilating fans. Plus hair.

Did you get scalped tickets to Taylor Swift’s “Eras” show? Did you catch Barbie, her 18 wigs, and her 30 or so hairpieces? How about the Musée des Arts Décoratifs exhibition “Des Cheveux et des Poils,” about hair on the head and body?