Hey guys:)
I have been using the regimen for almost a year I would say but it really dried out my skin:/ I still get flaky and stuff. Recently i found a really good moisturizer though (shiseido) that really helped moisturize. I want to try using a skin softener from the same company.. Its kinda like a toner, without alcohol, and its supposed to really help out with dryness. So my question is if I were to add the skin softener to my regimen, should I use it before or after applying BP? Thank you so much with any reply.
Before, no doubt! I've been using the regimen for about four years now, and after the second year I started adding new products that I thought would help my face. I use a toner, night cream, eye cream, and serum all before applying BP. I feel like BP should always be on top.
If you've been following the regimen for a year and are clear, its perfectly fine to start experimenting with different products. I completely agree with building beautiful, apply the toner before the BP.
Before I started following the regimen I used to use Shiseido products for about 10 years (including the skin softener), and I miss them so much (actually I mainly miss the smell), but since the regimen my skin has never looked better which I put down to AHA. Although I miss Shiseido products, I sure don't miss the cost! 
Good luck with getting your skin hydrated, but remember to only make one change at a time and see how your skin goes. About 6 months into the regimen, I used an exfoliating pad (dermologica) and for two days my skin was glowing and amazing looking, but then I broke out severely. That was a good lesson for me to not muck around too much with the regimen.