Here's why:
* Lip Structure: The shape, size, and texture of your lips are determined by your genetics and are unique to you.
* Muscle Movements: The way your lips move when you press them against a surface also creates variations in your lip print.
* Environmental Factors: Even things like the amount of moisture on your lips or the pressure you apply can subtly alter your lip print.
While there might be some general patterns in lip prints, like the presence of a central groove or the shape of the corners, the overall pattern is highly individualized.