Fumaric acid monoethyl ester magnesium salt is primarily used in the pharmaceutical industry as an active ingredient in treatments for psoriasis. It helps to modulate the immune system and reduce inflammation, making it effective in managing the symptoms of this chronic skin condition. Additionally, it is utilized in dermatological formulations to improve skin health and reduce the proliferation of skin cells, which is a key factor in psoriasis. Its role in regulating immune responses also makes it a candidate for research in other autoimmune disorders. Outside of pharmaceuticals, it may find applications in specialty chemical formulations where its unique properties can be leveraged.