- Age requirement: Must be 18 years or older.
- Recent medication history: It is necessary not to have used antibiotics, iron supplements, or Retin-A within the last 14 days.
- Sun exposure restriction: Avoidance of sun or tanning bed exposure in the past 2 weeks is mandatory.
- Medication history: Should not have taken Accutane or immunosuppressants in the past 6 months.
- Must not be currently pregnant or breastfeeding.