Display or hide layer styles
When a layer has a style, an
“fx” icon 
appears
to the right of the layer’s name in the Layers palette.
Hide or show all layer styles in an image
Expand or collapse layer styles in the Layers palette
Do one of the following:-
Click the triangle
next
to the layer styles icon to
expand the list of layer effects applied to that layer. -
Click the triangle to collapse the layer effects.
-
To expand or collapse all of the layer styles applied within a group, hold down Alt (Windows) or Option (Mac OS), and click the triangle or inverted triangle for the group. The layer styles applied to all layers within the group expand or collapse correspondingly.