Does it really never dry out, or in theory never dry out? If it’s the former, that would be great.
The thing is it has to dry out. There’s no special magic happening in a tyre. The sealant reacts with the air in the tyre, and tyres remain porous at a microscopic level so they dry out as some of the more volatile components of the sealant evaporate through the sidewalls. Thats just the way it is. I have some ‘prototype’ sealant from a manufacturer, which claims the same, but the issue is that it never dries out, inside or outside the tyre. The little blue bits will seal a hole for a while, but while you ride they become dislodged and unseal, and so the whole process starts again – its amazing as long as you own a pump and don’t mind using it.
Im not saying that Peaty’s sealant is bad, just that I’d want my sealant to dry out over time.