Transform has 21 clinics in the UK, with breast enlargement a core part of its offering. For men, rhinoplasty is popular.
It is particularly keen to target potential female patients through a media programme targeting women's and health pages.
'We hope to expand knowledge on procedures and the latest surgical and non-surgical innovations,' said Transform marketing director Elizabeth Dale.
Tangerine won the account in a competitive pitch that included two-year incumbent Golley Slater.
In late 2005, Transform was criticised by the British Association of Aesthetic Plastic Surgeons for 'trivialising' cosmetic surgery by introducing a patient loyalty scheme.