1. Open Tik Tok and click the+icon to open the Tik Tok application, and then click the+icon at the bottom.

2. Enter the shooting interface, click props to enter the shooting interface, and click "props" at the lower left.

3. Switch the decoration category to "Decoration Category" in the prop bar.

4. Click on the slimming effect to find and click on "slimming effect".

5, choose the slimming effect, choose the slimming effect special effects you need, and shoot in front of the mirror.