From NASA’s LED wizardry to mascara magic, prove you’ve got the beauty smarts to outshine any highlighter.
When dealing with painful cystic acne, what common temptation should you resist to prevent infection and reduce scarring?
Popping
Before modern detergent-based shampoos, what simple cleaning product did people use to wash their hair, even though it often left it dull and hard to manage?
Soap
Which facial massage technique from Traditional Chinese Medicine uses a flat stone tool to boost circulation and lymphatic flow?
Gua Sha
This popular skincare therapy uses colored lights to treat acne and wrinkles—what does LED stand for?
Light Emitting Diode
Which major change in women's lives during the 20th century drove the boom in nail salons?
Entering the workforce