Threads like these puzzle me. Treating a burn is a medical problem with medical solutions. Why do so many readers of YWN bring their medical problems to an anonymous group of yentas (including me), who in few cases purport to even have medical credentials, and seek advice for medical problems. Some of these responses sound right to me, some sound wrong, and some sound scary. But the scariest thing is that some people would rather seek advice from unknown, uncredentialed yentas than seek medical help for a medical problem.
And, just to add my own uncredentialled 2 cents, the soaking in cold water promptly after suffering the burn is what prevented the blistering. But be sensible – don’t take my word for it.