We are going on holidays with my 6 months old that has eczema and I’m hoping it will help her . As me and my partner both suffer with it and pool / sea water and sun helps massively with eczema. I even just go do a wee subbed when I have a flare up cause the “sun” heals it .
No swimming yet but his skin looks so much better after his bath everyday.
So, I can't say for definite, but when we went to tenerife for a week, her eczema got so much better, and she was in the pool most days. I'd suggest just making sure you wash them off really well afterwards and apply cream straight away.