I ended my 21-day Master-Cleanse (my first MC) 8 days ago, and have noticed that my hair doesn't get oily as quickly as it used to. I have been in the habit of washing my hair every other day, as it is quite oily by the end of day 2, but I'm noticing that it's not oily even on day 3 now. Which is great, because I don't think frequent washing is ideal, and had been wishing to need hair washing less frequently.
I also have noticed more energy and mental clarity, more calm. I started oil pulling right after finishing the MC, and am not sure which of the two has been the reason for this, but it's very nice to not be so exhausted and stressed.
The third thing I've become aware of is less bloating in general in the gut. Even though I didn't immediately go into a superior diet (i.e. lots of produce), as I'd hoped to do, I still don't have a bloated belly as I used to. I'm fairly certain there was healing done in my intestines (which had some rough treatment with parasites and harsh dewormers when I lived overseas in the 90's). I can press down on my abdomen with no pain or sensitivity internally. Yeah, MC!