"Do you still need to deep condition after doing this pre-poo?"I decided to answer her question as a post just in case anyone else had the same question! =)
In my opinion, I think you would benefit from still doing a DC after shampooing even when you use this pre 'poo method. I say this because A. the cheapie conditioner is not enough to give your hair a thorough conditioning, and B. Because the shampoo will have still stripped some of the moisture from your hair.
One thing to consider, though, is maybe using deep conditioning treatment with heat as your pre 'poo (so using higher quality, more intensely moisturizing/conditioning products) and then using an instant conditioner after shampooing (maybe leaving it on, for a couple of minutes without sitting under the dryer before rinsing). This is called the Condition-Wash-Condition method and it has worked well for me in the past.
HTH and HHJ!
Questions? Additional comments? Email me at HairIAmWORLD@gmail.com