What is the purpose of using lip liner in makeup application?

The use of lip liner in makeup application primarily serves to define the lip shape and prevent feathering. This is crucial for achieving a polished and well-defined look. By outlining the lips with a liner, you create a clear boundary that enhances the shape of the lips, making them appear more structured and aesthetically pleasing.

Moreover, lip liner helps to prevent lipstick from bleeding or feathering into the surrounding skin, which can happen over time due to the natural movement of the lips or the texture of the lipstick used. This longevity is particularly important for individuals who want their makeup to last throughout the day without the need for constant touch-ups.

While enhancing lipstick color, adding shine, and providing hydration are valuable aspects of lip care and cosmetic application, they are not the primary purpose of lip liner. Lip liner focuses more on definition and preventing undesired movement of lip color, which is key to achieving a clean and finished makeup look.