I believe all of the above may work. I would try everything to see what works for you. For me, I started the AIP diet. It’s a short term diet to see what triggers/ aggravates the Psoriasis. I
use Lucraderm powder daily in a smoothie. Vitamin E oil directly on scalp, cover and leave on overnight. I also used apple cider vinegar prior to applying the oil. The AC Vin. soothes the scalp. Rinse well with cool water only! I wash my hair with a product called Psoria-Care,
Shampoo and Conditioner. They also sell a scalp treatments. I leave that to on overnight as well.
Hope this or any other post helps bring you relief! I feel for you. I have Rx meds that simply do not bring any relief and are so very expensive.

*always cool temperature for water and for blowdrying. I cut out products in my hair that sit on my scalp like gels/mousse.
Good Luck💜

I had lots of scales and hair was getting very thin. From Amazon got a UVB ultra-violet wand and after several weeks of sessions mine cleared up and most of the hair has been growing back. I now go for many weeks between treatments. Only use it for a couple minutes moving it around. The wand was kind of pricy but it worked.

I use psor val from AdvancedAlternativescenter.com its 60 dlrs i use it on my scalp as well as my skin and it does wonders..i combined it with the light treatment and im cleared..use it twice a day until the blemish disappears then 3 times a week then once a week to maintain it cleared or as you need it

i used coal tar in my scalp whili im in the philippines
when i arrive here i change it to TGel shampoo and its help a lot for me

Betnovate or more recently betacap scalp Application has done the trick for me