Jean Harlow's platinum hair has inspired generations of women to douse their heads in ammonia and peroxide. Harlow was a natural light blonde, but ended up using incredibly harsh bleach on her hair because the pure monochrome of depigmented hair translated beautifully onto black and white film. Her hair was in such poor shape toward the end of her career that it reportedly broke constantly and was too delicate for regular styling.
Jean's hair color started a craze across the US; however, where rabid fans bleached their hair to look like hers. Howard Hughes even offered $10,000 to the beautician who could match Jean's hair color.