I've gone back to buns as my ultimate protective style after a few mishaps
, but I had to cut back on wet bunning pretty much altogether. I've found that its better for me to do a ponytail or bun style on hair that is partially dry or close to it. Pulling your hair taut while its sopping wet can be terribly damaging to your tresses. Hair is stretched and the most elastic when wet. As the hair dries, it begins to contract, and this is where you may begin to see breakage. While the stretched hair is trying to return to its normal state, it is still being held taut in its stretched position by your holder. Over time, the area near the holder grows weaker from the stretching and its inability to properly contract during drying. The end result is breakage, especially if you wear your bun in the same place faithfully.
Other things you can do to reduce bunning breakage are making sure you coat your holder with an oil or something to reduce friction on the areas of the hair strand under the holder, and always giving yourself that wiggle room with your holder. I limit myself to two times around for a holder on damp hair (just to keep it contained until dry) and up to three on dry hair. Either way, you should be able to touch your chin to your chest and roll your head from side to side without feeling any tension, tugging, or pulling anywhere.