Dr. Ostojić, as well as all associates working in the Ostojić Clinic, continuously follows the most modern medical and technological achievements and knowledge. The education program must include a visit to at least two established world medical congresses annually. Dr. Ostojić is currently the only doctor in Croatia who holds a valid certificate for the use of Aquamid in aesthetic surgery, issued by the Danish manufacturer "Ferrosan".

Aquamid has been registered in Croatia for four and a half years thanks to the initiative of Dr. Ostojić, who was the first to start using Aquamid in aesthetic surgery in Croatia. In the past four years, more than 400 patients have been treated with Aquamid at the Ostojić Clinic, with only one case of lip infection, excellent aesthetic results and very satisfied patients.

In 2000, Dr. Ostojić was the first in Croatia to start using Botox A in treating wrinkles of the upper third of the face. In addition to standard surgical procedures, Dr. Ostojić has been using a radio wave knife in his practice for years, which allows for bloodless surgical procedures and maximum precision in surgical work, as well as removing numerous skin growths without any scarring.

In his practice, Dr. Ostojić uses only the best and most modern surgical instruments and equipment, as well as appropriate consumables, to ensure that the aesthetic result for each patient is optimal.