A woman is calling for an investigation into a well-known cosmetic doctor after she and members of her family were allegedly disfigured by facial filler injections received at a clinic in the Siam area.

Ketsarin Chatsunthorn, a 42-year-old dentist, said she, her mother and her sister went to see the doctor who claimed to be a specialist.

She claimed the doctor has three cosmetic clinics and is famous among celebrities and influencers.

Ms Ketsarin said she agreed to receive 15 cc of the filler injection, her sister 11 cc and her mother 30 cc.

However, they later discovered that the doctor had injected 18 cc for Ms Ketsarin, 22 cc for her sister and 37 cc for her mother, charging them a total of 1 million baht.

According to Ms Ketsarin, one week after the jabs, her mother's lower face began to sag unevenly while she and her sister's face started to feel misshapen. 

The doctor attempted to fix the problems by injecting a solution into her face.

Her sister's face was treated through pressure, which moved the filler. Ms Ketsarin alleges that both fixing attempts made things worse.

Ms Ketsarin said she later consulted with a medical professor, who explained that the deformities were caused by too much filler. Normally, no more than 10 cc should be used, she was told.

Currently, Ms Ketsarin and her family are undergoing treatment to remove the filler, costing them tens of thousands of baht.