Dr. Abigail Waldman, MD FAAD on Instagram: "These are the life style changes and at home treatments I recommend for psoriasis as a Dermatologist 1. For scalp psoriasis use a shampoo with salicylic acid like Tsal. For more severe scale use salicylic acid 3% solution or make your own by crushing 3 full strength aspirin in 1 cup apple cider vinegar. Leave on for 15 minutes and rinse. 2. Salicylic acid 3% can also be helpful for mild to moderate psoriasis on the body too 3. Coal tar is available ove