Skin tags are small, soft, skin-colored growths that hang off the skin and look a bit like warts. They're very common, benign (non-cancerous), and can vary in color and size – from a few millimeters up to 5cm (about 2 inches) wide. Skin tags are usually found on the neck, armpits, around the groin, or under the breasts. They can also grow on the eyelids or under the folds of the buttocks.