I used it a lot in the bath, nothing else, unless i was using other armoamatherpy oils (be careful with mixing, make sure you reserach well before). I usually run a fairly warm bath and added it when running so the room was full of its sent, it says you need to be in for at least 15 minutes to get the desired affect, no problem for me i love my baths. I wouldnt use the radox at the same time as it may neutrilaise its affect. just 3 drops per bath.
If you want more applications, then you can make up an oil that you can message into your bump and back. Never use neat, you need a carrier oil, such as almond carrier oil, again can get online. What i used as i had it in mass supply was baby oil, works just as well. again 3 drops, you should look up quantities.
Good luck x