Use of onion extract, heparin, allantoin gel in prevention of scarring in chinese patients having laser removal of tattoos: a prospective randomized controlled trial.
Dermatol Surg. 2006 Jul;32(7):891-6. doi: 10.1111/j.1524-4725.2006.32192.x.
Dermatol Surg. 2006.
PMID: 16875470
Clinical Trial.