You can use TikTok filters and effects to add a wide range of visual enhancements when making a video on the app.

You can add a filter or lens to your Snaps, but the process is quite different, depending on the effect you want to use.

The sad face, or crying face, filter has been taking over TikTok this past week with an ongoing influx of viral videos showing the strange-yet-hilarious effect. Each video takes the same plot: someone ...