To smooth the background in Photoshop, first, select the layer you want to edit. Use the 'Select and Mask' feature to create a clean selection around the subject. Once selected, apply a Gaussian Blur filter to the background layer to soften it. Adjust the blur amount to achieve the desired smoothness while preserving your subject's clarity.
![Create Smooth Seamless Backdrops in Photoshop [Fast & Easy]](https://photoshoptrainingchannel.com/wp-content/uploads/2022/10/Seamless-Background-Tutorial-13-1000x538.png)