Evaluation of people's satisfaction with botulinum toxin injection for facial rejuvenation based on age.

The average age of participants was 38.8 ± 8.29 years with 73.3% being female. Masport botulinum toxin (MasoonDarou Pharmaceutical Company, I.R. Iran) was the most frequently used botulinum toxin brand at 66.7%. The average satisfaction score with the result of botulinum toxin injection in the forehead/glabella and periorbital area, in the age group under 30 years and 30-40 years, was significantly higher than in the age group over 50 years. The same indicators in the age group under 30 years old were significantly higher than in the 30-40 age group (p < 0.05). Furthermore, brand selection and the number of visits (first-time vs. second-time clients) demonstrated varied outcomes in satisfaction. There was a total of 62.7% side effects postinjection, with varying degrees of severity.