Body-editing apps advertised on social media platforms like TikTok and Instagram are triggering young people with eating disorders, campaigners fear.
Adverts show how the apps can be used to alter body parts, including making waists slimmer and adding muscles.
Eating disorder charities have said technology firms should consider the impact on vulnerable people.
Campaigners say the platforms said the apps do not break advertising guidance, but TikTok added it does reviews its policies.
TikTok popular with teenagers, had earlier banned adverts for fasting apps and weight loss supplements last year.
Last year, Instagram announced new rules for tighter restrictions on some posts related to diet products and cosmetic surgery.
There are several free apps available on both Apple and Android app stores that allow for convincing body enhancements.
Users can edit photos or videos, changing the size and shape of bodies and faces, smoothing skin and enhancing muscles.
Yorkshire-based charity Seed said it has seen a 68% increase in 10 to 19-year-olds seeking help in 2020 compared to the year before, with a 56% increase overall for all age groups.