I'm 4b and used affirm for years and would strongly suggest that the entire system is used as recommended. There was thread a few months back re: thinning hair using affirm without the 5 in 1 or positve link (I don't know how to post the link here, but you can try searching for "affirm" in the title -- I think it was something like "affirm thins hair" or something like that) -- anyhow, the point was that overtime, hair MAY thin if the 5in1 or PL is not used prior to neutralizing. I really think the system was designed to work together (conditioning before neutralizing is a KEY step in the affirm process that sets it appart from the rest, IMO). If you want to just relaxd and neutralize, then use a system designed for that. If using affirm, I think it just prudent not to take chances and use as recommended. Just my two cents.