1992 commercial for Head & Shoulders Frequent.

Head & Shoulders is a brand of anti-dandruff shampoo produced by Procter & Gamble. Head & Shoulders Classic Clean Shampoo is the top selling shampoo in the United States by dollar sales.

History

Procter & Gamble researchers first decided on making a new anti-dandruff shampoo in 1950. Nearly a decade of research went into making a new formula, which introduced the product pyrithione zinc into a shampoo.

Head & Shoulders was first introduced to the U.S. market in November 1961, as a blue-green shampoo formula.

The brand’s “Extra Strength” product had a cameo role in the 2001 film Evolution, where its startling copper orange color was shown.

Ingredients

Active ingredient: Pyrithione zinc 1%
Inactive ingredients: water, sodium laureth sulfate, sodium lauryl sulfate, cocamide MEA, zinc carbonate, glycol distearate,dimethicone, fragrance, cetyl alcohol, guar hydroxypropyltrimonium chloride, magnesium sulfate, sodium benzoate, Magnesium carbonate|magnesium carbonate hydroxide, ammonium laureth sulfate, benzyl alcohol, sodium chloride, methylchloroisothiazolinone, methylisothiazolinone, sodium xylenesulfonate, blue 1, red 4

Info gleaned from Wikipedia