Are you wondering what ia lip tint is? Well, I found this description from Wise Geek.com that should answer all of your questions.
"Lip tint is a cosmetic product applied to the lips to give them color, often without much gloss or shine included. Generally, lip tint is applied to bare lips, and the color will slightly stain the lips; it is also occasionally referred to as lip stain. One might then choose to apply lip gloss over the top of the tint, to get that shiny appearance. Products such as gloss or lipstick are sometimes labeled "lip tint" as well, however; so it can be a bit of a catch-all term.
At its most basic, lip tint is a product for the lips that tends to fall somewhere between gloss and lipstick. It goes on more lightly than lipstick, but provides more color than gloss. Lip tint frequently contains additional ingredients such as sunscreen, conditioning ingredients, or even a minty scent to make breath smell fresher. Sunscreen and conditioning ingredients are particularly helpful, because they help protect the lips from sun damage or skin cancer as well as to make them appear softer and smoother. Lip tint typically comes in a squeeze tube or a twist-up tube.
One of the benefits of lip tint is that it is generally very long lasting. If it contains gloss, the gloss will eventually be wiped off, but the color will stay. This is because it has temporarily stained the lips, and is not just resting on top of them.
This type of lip product is an excellent choice for hot summer days, or for days when it will not be possible to regularly reapply lipstick. One might also choose to wear lip liner with this type of product, to prevent it from feathering. In addition, one of the main problems with lip liner is that the lipstick tends to fade far before the lip liner does, but with a long-lasting tint, this will not be a concern. This type of tint for the lips can be removed at the end of the day with ordinary makeup remover.
Another benefit of lip tint is that it occasionally doubles as a cheek stain, which functions similarly to the tint for the lips but instead temporarily stains the cheeks, giving a blushed appearance. For someone who is traveling or who does not want to use a number of different cosmetic products, a combination product like this can be an excellent choice. Keep in mind that both stains for the cheeks and the lips tend to appear much darker in the bottle than they do on the skin."