I recently moved and my bedroom shares a wall with my neighbour's child's bedroom (I think they're around 6 or 7). The sound proofing isn't great, I can hear them talking but not make out what they're saying if that makes sense. I always wash my hair at night and tend to blow dry it at around 8:30pm-9:30pm. Is that acceptable? I will of course try and do it earlier but sometimes it's not possible. I'm hoping that the sound of a hair dryer is like white noise so won't disrupt their sleep?