1. Open Tik Tok, and when you brush the video with age gradient special effects, directly click "Age gradient" in the lower left corner.

2. Click on the "red circle" with camera below;

3. If you don't like the music of the original video, you can click "Music Name" above;

4. Select "Use" your favorite music;

5. Click on the "red circle", aim the camera at the face and start shooting video (aim at anyone). When shooting, slowly pull the ball to the right, so it will get old slowly;

6. the topic "ever-changing time machine" will be added. just write the title and click "publish" in the lower right corner.