No corrosion, also no boiling. I realise my point didn't really get across well; good silicone is durable, and with simple non-electronic toys, like dildos, you can just toss them in a pot and boil for a while. What you want to avoid is oil-based or silicone-based lubricants because it can lead to material degradation, even if the silicone itself is really high quality.
My cleaning procedure for the edge is essentially to get the lube off, wash it with some anti-bacterial soap, and then dry it off immediately. It's been about two years now and it's in solid condition.