Bubblegum is a type of chewing gum especially designed for blowing bubbles. Bubblegum is available in many different colors and flavors. The most common flavor is the distinctive one also known as "bubblegum", which is a combination of wintergreen, peppermint, vanilla and cinnamon. Bubblegum with this flavor is traditionally colored a light shade of pink.
Bubblegum tends to be more viscous than standard chewing gum: this facilitates bubble blowing. Some brands are designed to be non-sticky so they do not stick to one's face. Examples include Big League Chew, Bubble Yum, Bazooka, Dubble Bubble, and Bubblicious. In North America, the United Kingdom and Australia, bubblegum is often dispensed in gumball machines : ) source: WikipediA