Lili Reinhart has issued a PSA to fans about the dangers of Photoshopping apps. The Riverdale star shared her thoughts on Instagram Story, specifically targeting BodyTune, which can tweak a person’s appearance. The star has become celebrated as one of the staunchest body-positive celebs around, consistently calling out photoshopping as a major mental health issue.

“This morning I was looking for an app that would help me resize my photos to better fit Instagram…And then I came across this app. It then proceeded to play a little clip as part of their advertisement. Which I screen recorded.”

After that, a video played showing a woman’s arm being slimmed down in the app.

“This is not okay. This is why people develop eating disorders,” Reinhart continued. “This is why social media has become hazardous to our health. This is why people have unrealistic expectations of their bodies.”

The 23-year-old added: “I implore you: do not use these kinds of apps. If you photoshop your body you are adding to this problem. This is how unrealistic standards of human bodies have been created— to the point where people alter their bodies surgically to achieve unnatainble sic results. We are better than this.”

Reinhart continued, saying that looking “skinnier” in a photo on Instagram is not worth the “detrimental psychological effects” that the photoshopping apps “have given our generation.”

“Once you alleviate yourself of the pressure to conform to FAKE/UNREAL standards…the world is a lot brighter,” Reinhart concluded. “I promise you.”