Why should gel polish be applied in thin layers?

Applying gel polish in thin layers is crucial for several reasons related to the curing process. When gel polish is applied too thickly, it can lead to inadequate curing. The gel needs to be exposed to the UV or LED light evenly throughout the layer to cure properly. If the polish is too thick, the light may not penetrate through to the bottom layers, resulting in a sticky, uncured surface that can lead to lifting and peeling over time.

Thin layers help ensure that each layer cures completely, reducing the risk of pooling at the cuticles or edges, which can also create a messy appearance and potential lifting. Proper curing also maintains the integrity of the color and allows for a more durable finish. Therefore, applying gel polish in thin layers is essential for achieving a well-cured, long-lasting manicure.