here is a list of usefull items to use, pasted from another doll forum :
Liquitex (Acrylic artist colour)
Game workshops paints (Acrylic form water down)
Winsor & Newton Gloss for Acrylics
And some time used Winsor & Newton Galeria Acrylic
CONTÈ À PARIS Soft Pastels
Inscrible Soft pastels
or any other good brand soft pastels, they sale as a set or individual stick.
I've used chalk pastels before but I really don't like how it blend in together, when putting on the face of the doll.
Also it can be sometime hard to see colours, if it natural tones.
Most use is Daler-Rowey (Red based handle with white tip)
Winsor and Newton
and oddly Partners own brand bushes, *mostly used it for mixing and bushing,*
Also I used cosmetics Bushes for bushing for larger areas like cheeks
Magic Eraser by JML
Boots Cosmetic cotton buds (Which got pointed tip) or the normal cotton if you like
Watercolour pencil by W H Smiths
All most of the stuff I listed is easy to buy here in the UK, But not MSC where I order from HLJ ToT "
Hope that helps!