The interior consists mainly of sugar, corn syrup, and hydrogenated palm kernel oil along with fruit juice, citric acid, and natural and artificial flavors.

[7] Skittles' "taste the rainbow" theme was created by the New York ad agency D'Arcy Masius Benton & Bowles.

The Wrigley Company, a separate representing party of the Skittles brand, mass-produced the limited-edition colorless candies.

[18] Every June, Skittles repeats the colorless marketing to spread Pride awareness and raise proceeds for an LGBT charity, such as the Switchboard helpline in the United Kingdom.

[21] In 2019, it conducted a pre-Super Bowl campaign featuring Skittles Commercial: The Broadway Musical, which was performed one time only at The Town Hall in New York City.

[24] This resulted in the EU phasing out sale of Skittles and other foods containing titanium dioxide starting February 7, 2022, with a full ban enacted August 7, 2022.

[25] In July 2022, a lawsuit seeking class-action status was filed in California regarding the continued use of titanium dioxide as a coloring agent.

that contain titanium dioxide and 4 other harmful additives (which are propylparaben, red dye 3, brominated vegetable oil, and potassium bromate) across the State of California, all five of which have been linked to causing cancer and other health problems and at least three of these five harmful additives are already banned by the European Union from being used in food and drink products.

If passed, California will become the first US state to adopt the European Union's ban on titanium dioxide and other cancer causing chemical additives from being used in food and drink products.

Skittles has hinted at new flavor releases on its Facebook page, using such statuses as "Locking myself in the Rainbow kitchen until I see some results!"