What about Castile soap? It lathers up really well and is concentrated

http://www.amazon.co.uk/Dr-Bronner-Baby-Mild-Cast-472ml/dp/B0009EIMQG/ref=pd_sim_sbs_d4

Or Mother Goose cheaper but not as natural

http://www.mothergoose.uk.com/cgi-bin/goos.cgi?Wish=06960050062100007E4C99AB

I bought some in a Savers shop, not sure where else its sold

I would really recommend Naturally Thinking if anyone is looking for very simple formulations.  They sell cosmetic bases for people to add aromatherapy oils to.  But the bases work well as very plain products in themselves!  The conditioner is one ofthe best I’ve ever had for CO washing, though I need to use a leave in as well.  Most of their products only have about 5 or 6 ingredients, so v little to react to.

I would also think this would be a good base for any curlies who want to mix up their own perfect blend for a conditioner.  I’m thinking of mixing it with 5% jojoba oil to see how that works for my hair…

It doesn’t work out that cheaply for me, as I like using LOADS as a CO wash.  But I’m thinking of buying a whole litre next time which should be more economical - if only in the long run!

Here’s a link: http://www.naturallythinking.com/categories/Aromatherapy/Cosmetic-Bases