Tretinoin to the rescue
I have had KP for 25+ years on the back of my upper arms and above my wrists. I got breast cancer recently and during chemo it fully went away as my body was not reproducing skin cells. After chemo finished my KP was returning fast and after seeing my skin without it for a few months I didn’t relish its return. I had to stop using Tretinoin on my face whilst on chemo and restarted it recently and thought why not give it a go on my KP. It has worked so well. I just apply it whenever I remember (around every 3rd day) and within 2 weeks my KP is practically gone. I tried so many products over the years that I just wanted to share. I use 0.05% and use just a similar amount as I would use on my face. If you already use it on your face I highly recommend giving it a go on your arms!