I find it hard to tell, but I have been using Surge for 3 weeks now and I have using MTG for 2 weeks. I use MTG at night on my scalp and use Vitapoint on my ends, pull it back in a bun and put a satin scarf on and go to bed. When I get up in the morninng, I use Surge on my scalp (in the same manner that I did the MTG the night before), moisturize my ends, pull in a bun and go. I have been washing once a week and I have "waves for days" underneath. I am 5 weeks post relaxer and trying to stretch to 12 and I really hope I will be able to do it because even at 5 weeks, the waves are coming....(I usually go 8, but have gone 10 before only because I got it flat ironed really straight).....
So to answer your question, I can't say which one really. I have wondered myself but don't want to use one without the other for fear it will slow down my growth!!