LipSense is a system that best works together. The LipSense color is a patented formula that is long lasting. It is water proof and doesn’t smudge off. It can last from 4-18 hours depending on your pH balance. The gloss is essential to the longevity of the color. It is also extremely hydrating. Because our colors are so long lasting, you definitely need something to get it off your lips in case of mess up and at the end of the day. The Oops! Remover is perfect for both. All first time customers are recommended to purchase a starter kit. Since a starter collection is actually 3 products, once you have 1 starter kit you can purchase as many additional colors as you would like.