A Photoshop style is a set of instructions or commands that can be applied to an image to create a specific look or effect. These styles are specifically designed to meet the needs of designers who want to edit and enhance images quickly and efficiently. Photoshop styles are typically used to perform tasks such as creating a vintage look, adding texture, or creating a high-contrast effect.
Additionally, Photoshop styles are a fast and convenient way to add effects, such as drop shadows and glow, to layers in a non-destructive way. Styles are essential in order to create complex combinations of effects. The program always has a standard set of styles, but you can add to this set.