However, adverse health effects may result with improper application:
- excess absorption of the active ingredient, toxic effects
- skin rashes
- irregular heartbeat
- seizures
- coma
- death
With its popularity in the cosmetic dermatology industry and the availability in over-the-counter topical cream, it is important for EHO's to note the possible use of topical anesthetics in the personal service establishments, especially for the laser hair removal and tattoo procedures.
Reference: USFDA - Topical Anesthetics