I have never heard of nettle moisturiser.
But nettle tea is very good for helping the liver.
Since the liver can sometimes be implemented in psoriasis flares, it makes sense that nettle tea can help with psoriasis.
It, along with dandelion, were two of the herbal teas that I drank whilst I cleared psoriasis with diet.
I still drink both to this day.
I will have to look into the nettle moisturizer, as it sounds intriguing.