I am allergic to Plastic(like grocery store bags ) and dust. As soon as it touches my skin I break out in big red welts . Looks like I been in a fight with a cat . The most simplist and fast solution is applying hand sanitizer to the affected area. It doesn't sting and rash is gone within 10 minutes
Add some lime juice to sandalwood paste and apply to affected areas.
Grind a tablespoon of poppy seeds and add to a teaspoon of water and a teaspoon of lime juice. Apply the resulting paste to affected areas.