To discover the answer to this very intriguing question, we sent Heidi Johnson, our US visitor from our home ward to a highly rated beauty salon in Tema. Answer: it took four hours!
Heidi starts her four hour journey.
She had sometimes three and sometimes four salon specialists attending to her hair the entire time.
After heating water with propane and putting the ends of Heidi's hair in curlers, the owner dipped each curler in boiling water.