Kolliphor CS 12 and CS 20 are polyoxyethylene alkyl ethers prepared by the condensation of linear fatty alcohols derived from vegetable sources with ethylene oxide. The reaction is a controlled one, so that the required ether is formed with the polyethylene glycol of desired molecular weight.

Kolliphor CS A is an anionic emulsifying wax prepared by melting cetostearyl alcohol and heating to about 95°C. Purified water and suitable anionic surfactant i.e. sodium cetostearyl sulphate is added and this mixture is further heated upto 115°C with vigorous stirring until frothing ceases. The resulting wax is then rapidly cooled.