For Phillip Kingsley have a look at QVC - I was looking at it recently and they were by far the cheapestDifferent things work for different people don’t they but here’s what I’ve used
The body shop ginger shampoo and conditioner - worked to start with then stopped. Made my hair feel dry after using it long term.
Tgel shampoo - didn’t work for me although it does for my friend but makes my hair feel horrid.
Prescription shampoo from the drs called dandrazol - worked but not instantly.
superdrug trichology range - didn’t work for me at all
Philip Kingsley - itchy scalp shampoo and conditioner and also scalp toner - this works for me without a doubt and I like the scalp toner. It doesn’t make my hair greasy or dry and I like how all of it makes my hair feel, it is expensive though but for me so worth it.