How to Apply an Adjustment Layer to one Layer in Photoshop

How to Apply an Adjustment Layer to one Layer in Photoshop,

To apply an adjustment layer to only one layer in Photoshop, use a clipping mask. Place the adjustment layer directly above your target layer, then hold Alt (Windows) or Option (Mac) and click on the line between the two layers. Alternatively, click the square icon with a downward arrow in the Properties panel.