Complaints about botched dermal fillers have doubled in the past year, with some of those affected being teenagers, figures suggest.
More than 1,300 people reported practitioners to the campaign group Save Face last year, according to data seen by BBC Inside Out West programme.
Issues caused by aesthetic fillers can range from severely swollen lips and blood clots to anaphylactic shock and blindness.
In the programme, experts from Save Face said a lack of regulation is leading to a worrying rise in procedures going wrong.
Patient complaints about dermal fillers rose from 672 in 2018 to 1,342 in 2019, it said.
Save Face director Ashton Collins said: "Dermal fillers are extremely dangerous and unfortunately there are no laws dictating who can or can't do them. A lay person on the street could decide today they want to start offering these treatments, they could watch a YouTube video this evening... and set themselves up as a treatment provider."