02-041-20 Me. Code R. § 8
"Cosmetic resurfacing exfoliating substances and equipment" means cosmetic-use AHAs (alpha hydroxyl acid exfoliation preparations that do not exceed a 30 percent concentration with a pH value not lower than pH 3.0. glycolic and lactic acids), BHAs (salicylic acid), Jessner's solutions (14 percent salicylic acid, lactic acid and resorcinol) or modifications thereof, and proteolytic enzymes (papain, bromelain). The term also includes mechanical instruments and instruments that mechanically administer substances, including brushing machines, polyethylene granular scrubs, loofah or textured sponges, gommage and microdermabrasion instruments, provided the manufacturer has established and substantiated product and equipment safety. The term excludes all other chemical and mechanical exfoliating/peeling procedures and substances including, but is not limited to: trichloroacetic acid (TCA); carbolic acid (phenol); or combinations thereof and further excludes all adulterated chemical exfoliating/peeling substances.
02-041 C.M.R. ch. 20, § 8