But after physicians noticed that patients treated with Botox had fewer facial lines, an increasing number of doctors since the mid-1990s have used it to reduce forehead creases and crow's feet wrinkles, which are caused by muscle contractions right under the skin.

FORBES: Smooth Operator

But after patients who were treated with Botox showed a decrease in facial lines, an increasing number of physicians since the mid-1990s have used it to reduce forehead creases and crow's feet wrinkles, which are caused by muscle contractions directly under the skin.

FORBES: Smooth operator