Dr Cetto trained in Otorhinolaryngology and Head and Neck Surgery at Imperial College Healthcare where he completed a PhD in the field. He subsequently specialised in non-surgical facial medical aesthetics by completing a post-graduate Diploma in Aesthetic Medicine and practises at Clinic 1.6 located in Marylebone, London.

He is actively involved in research on nasal airflow at Imperial College London and to date has participated in multiple medical congresses internationally and authored several peer-reviewed publications.

He is a key opinion leader and senior trainer for Dr Zein Obagi and his ZO Skin Health Range. He is also an international speaker and medical board member for Swiss aesthetic manufacturer Teoxane.