I have a damaged skin barrier. When I do wudu, some areas stay dry. I asked AI, and it said that the water still briefly reaches the skin. Is my wudu still valid, or do I need to make sure That what ai said is true السلام عليكم ورحمة الله وبركاته بارك الله فيك جزاك الله خيرا أحسن الله إليك

Never ask AI for a fatwa. AI is used by someone who is already knowledgeable in order to research, compile information, and so on. Even then, the output and sources still need to be checked. So, never ask it for an answer or a fatwa. As for your case, I do not understand it completely, but if it is your own skin, it is fine. It is not like you are putting something on from the outside that would prevent water from reaching your skin.