agree with kiwispiers...my 3 month old had it.I took off whatever flakes i could with a small comb...brushing lightly..then rubbed in olive oil and washed afterwards...cradle cap was gone after doing this only a few times.
can't help with the brush but I found if you cover the head with loads and loads of oil (I used almond oil but you could use olive oil or non-scented baby oil0 leave it for an hour or so (keep them warm) then it actually rubs off very easily using a dry facecloth and/or a soft toothbrush for any stubborn bits) wash their hair with regular shampoo afterwards to get the oil off.
Has anyone seen one in Dubai? I had never even heard of them before but found them when googling craddle cap. My 4 month old twins both have it and the brush looks like it could be effective.
TIA