That's the frustrating thing nadateturbe, different things work for different people. Over the years I've tried lots of diet changes for six weeks or more to see if it had any effect, no alcohol, no dairy etc - and I can't use soap at all, makes my skin really stingy sore. I've done the sun bed treatments without any benefit, and have Dovenex and Betnovate steroid creams for when it flares. The only time it all went was when I was pregnant with my first child aged 36 - second child at 39 I looked like I had smallpox
I just live with it but have got lazy over lockdown, need to get back into the three times a day moisturising.