The Finn chamber methylene blue ring.
Metallic aluminium and methylene blue applied to human skin interact and give a strong resistant coloration, obtained neither with methylene blue itself nor with other dyes. The reaction proves that aluminium is not an inert material and that the aluminium in Finn chambers can be expected to interact with other patch test substances.
D000535:Aluminum / Q000494:pharmacology*; D004347:Drug Interactions; D006801:Humans; D008751:Methylene Blue; D012882:Skin Tests / Q000295:instrumentation*
D000535:Aluminum; D008751:Methylene Blue