Also known as Capsicum, Capsaicin is a chemical compound that creates a warming burning sensation when applied topically. Capsaicin is naturally found in chili peppers, cayenne peppers and other hot peppers, and it is commonly associated with spiciness.  Using Capsaicin is products such as lubricants is common practice.

Personal lubricant manufacturers sometimes include very minute amounts of capsaicin in their products to create a warming, tingling sensation. While capsaicin is safe in small amounts for most users, people with capsaicin intolerance should avoid sexual lubricants with this ingredient.