The watermelon filter is a new filter that was just introduced to TikTok. The filter features three watermelon slices that cover the screen. To unlock it, you have to drag a slice of watermelon across the screen in a squiggly pattern, collecting seeds along the way. The filter is called the "Filter for Good." Many users who are using the filter claim that doing so also raises money for humanitarian relief in Gaza.

The filter was created by an AR creator known as Jourdan, who announced that they were creating the filter to raise money for Palestine. Thanks to TikTok's Effect Creator Rewards program, people who create effects that become popular on TikTok earn money every time the effects are used. Jourdan has created other effects in the past. All of the proceeds she makes from the "Filter for Good" will go to charities helping to provide relief in Gaza.

Jourdan explains in the video that in order for the effect to start earning those rewards, it needed 200,000 uses. The effect has long since passed that benchmark, and has now been used more than 6 million times. Jourdan has provided updates on the effect and the proceeds it has generated. In her most recent update, she says that the filter has generated more than $10,000 in revenue.