The session is rescheduled
- Pregnancy or breastfeeding
- Antibiotics, iron supplements or retinoids in the last 14 days
- Isotretinoin (Accutane) or immunosuppressants in the last 6 months
- Sunbathing in the last 8 days, solarium in the last 2 weeks, or self-tanning
- Active herpes or skin infection in the area


