Pool edge ( coping) paint

Hello everyone,

Can anyone advise what paint we can use for the edging of the pool. I think this is concrete and called coping?
It has a rounded lip to the edge of the ‘coping’ which seems to have a very small crack between the coping and lip, so we’d like to fill that and then paint the entire edge of pool.
I’ve tried to show in the photo where the crack is and the white edge is what needs painting. It’s previously been painted, but just flakes off as soon as wet.
Any advice welcome. Thanks in advance!

The man in Quesada colours next to Quesada fish n chips will advise you

Thank you so much.

There is a special paint for pools which is resistant to the chemicals available at Leroy Merlin and some feriterias

That’s great. Thank you