My wife consulted a Chinese herbalist in London twenty years ago in desparation to try and find relief from serious eczema. She was given a potion to drink daily, which she had to distill from various parcecls of bark and similar vegatable matter, and yes, it smelled and tasted horrible.
But it worked. She has seen Chinese herbaklists regularly since - including a local practitioner which saves the London trips. The potion keeps her skin clear, compared with the complete lack of effect from NHS medication.
The medicine usually has to be used in conjunction with dietary adjustments - no citrus fruits, spices, pork, dairy produce, and occasional tea or coffee.
I would be inclined to avoid the bright 'theme' stores in shopping malls, but find a local qualified practitioner, and give them a try.