BunnyWabbit
Posts: 192
Location: Metro Detroit
Current Hair: aveda natural red shades
If you're careful, then no. Making sure you use LOTS of water to rinse your hair seems to help keep the pigment 'separted' so it can't bond to things. personally since I wash in cold water, at the end of my shower for the rest of my body (I only get my hair a little wet during this part), I bend over and stick my head under the bathtub faucet and rinse that way. I havent' had a problem with any sort of staining. Pouring some vinegar in the water while you rinse out the bathroom would help prevent any sort of staining as well.
If it does get stained, vinegar can help get it out, or some little bleach scrubs will do the trick.
Hope you have a good time in Chile! I've always wanted to visit SA, but I've only made trips to Europe so far.