Retinoids can help treat skin pigmentation disorders by affecting melanin production.
Retinoids or their analogs could treat skin pigmentation disorders like melasma and vitiligo.
9 citations,
March 2011 in “Clinical and experimental dermatology” The document concludes that anticonvulsants like phenytoin may cause skin reactions by affecting tryptophan metabolism and suggests researching vitamin levels in patients with drug reactions.
5 citations,
July 2006 in “Contact dermatitis” Ammonium bisulfite in hair bleach can cause facial eczema.
3 citations,
January 2010 in “Elsevier eBooks” The document describes various skin conditions, their features, and treatments but lacks detailed study size information.