My hair loves overnight conditioning. I do it about twice a month. Especially after I’ve been wearing my hair flat ironed and I am going back to wearing it natural. Sometimes my overnights are just my herb infused oils, sometimes it’s a mixture of conditioners and sometimes it’s a combo of dish + oils.
I find that it helps to one, use conditioners that are made for overnight (or leave in) use like the body shop's Brazil Nut Moisture Mask Conditioner or Kronos Phyx Overnight Conditioner, or Ojon Restorative Hair Treatment ect. And two, I find that I have better results putting my deep conditioner on my hair when it is about 80% dry & and I don't over saturate. I bag it and let my body heat do the rest. My hair detangles like a dream, no breakage, silky soft. I love the results of overnights!