Photoshop’s layer styles — effects that alter the appearance of a layer — are just fantastic. Photoshop pros use them quite frequently as an absolutely vital component of their workflow.
Photoshop layer styles are a popular way to add effects, such as drop shadows and strokes, to layers in a non-destructive way. With the right knowledge and experience, any effect can be achieved. To achieve these effects, however, you need to understand what each setting does and how they can be combined to achieve a certain look