Open the camera application and enter the photo mode.
Find the ""symbol next to the flash icon in the upper left corner of the shooting screen, and click.
You should see a set of adjustment options, including intelligent HDR, flash, live photos and so on. Slide this row to the left to display more options.
You should see the skin color option, which is displayed as a face icon. Click it to enable the beauty function.
You can use the slider to adjust the aesthetic level, from slight adjustment to more significant adjustment.
Please note that enabling the beauty function will make your skin tone smoother and softer, but sometimes it may produce over-processing effect in photos. Therefore, you may need to use the beauty function moderately to get a natural appearance.