1. First, we open PS and enter the main interface, as shown in the figure.

2. Then we open a picture with skin, as shown in the figure.

3. Then we click the lasso tool in the toolbar and select the appropriate lasso in it, as shown in the figure.

4. After that, we establish the skin area as the selection area, as shown in the figure.

5. Then we click Image → Adjustment → Curve, as shown in the figure.

6. Then we adjust the curve upwards and click OK in the upper right corner, as shown in the figure.

7. Then we found that the skin turned white, as shown in the figure.

8. After that, we copy a layer and select the layer as soft light, as shown in the figure.

9. Finally, the skin will turn white and look good, as shown in the figure.