Dear Sir,

We are working on a new project to develop aqueous dispersions using our Inorganic pigments like Iron Oxides. 
During trials with some existing ingredients, we encountered issues of sedimentation and separation.
Can you please advise a suitable wetting agents and surfactants/dispersing agents (cosmetic grade) that are effective for inorganic pigments in aqueous systems to help prevent separation.

While searching in the internet, we found below product for inorganic pigments but usage is showing in paints or coating.

Modified polycarboxylates
Examples: Dispex N 40, Dispex A40 (BASF)

We require a product which to be used in cosmetic inorganic pigments

Can you supply any product suitable for us ?
,

Thanks & Regards,
Ram (Mr.)