[Routine Help] People whose routine consists of only one line/series of one brand - which one and why?

Beauty Tips For Body Care
People whose routine consists of only one line/series of one brand - which one and why?I'm interested in just buying a "bundle" kinda deal since I've had ZERO luck with any of my routines, and my skin, wallet and self esteem are getting worse each product. I feel like a line/series makes more sense now since all their products work together.
Girls Blog 2015
Submitted by kangaroo-masseur