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Page 1 of 8 The use of NatraGem EW and NatraGem E145 in Sun Care Formulations for SPF and UVAPF Boosting Disclosed by Croda Europe Limited Introduction NatraGem EW (Glyceryl Stearate (and) Polyglyceryl-6 Palmitate/ Succinate (and) Cetearyl Alcohol) is 100% naturally derived (ISO 16128) certified by EcoCert and vegan suitable. This material is known as a highly effective emulsifying wax designed to offer outstanding efficiency and versatility. With an excellent electrolyte tolerance and compatibility with both high and low polarity oils, NatraGem EW can create pourable lotions to high viscosity creams which are non-whitening on the skin and have great sensory benefits. NatraGem EW comprises of 3 components, all of which play an important function in creating stable viscous formulations. Polyglyceryl-6 Palmitate/ Succinate is a high HLB component of the emulsifying wax. Palmitate creates the thickening feature in the wax based system. The dual polyglyceryl-6 head group keeps the high HLB and therefore, the superb salt tolerance. Glyceryl Stearate is used as a co-emulsifier for the Polyglyceryl Ester as it is a close derivative to this component. The Glyceryl Stearate also contributes to building the wax structure in the continuous phase providing the characteristic thickening within NatraGem EW formulations. Finally, Cetearyl Alcohol is an excellent co-thickener with the Glyceryl Stearate to optimise the rheology of the system. NatraGem E145 (Polyglyceryl-4 Laurate/Succinate (and) Aqua) is 100% naturally derived (ISO 16128) and vegan suitable. This material is known as a versatile high HLB, oil-in-water emulsifier effective in the creation of sprayable to pourable lotions, with excellent compatibility with both low and high polarity oils and efficient electrolyte, pH and temperature tolerance. NatraGem E145 is able to create stable emulsions even in the presence of electrolytes and other destabilizing actives, due to the architecture of its hydrophilic head group. In the presence of electrolytes or at raised temperatures, it is common for a non-ionic high HLB emulsifier to retract or coil to form intramolecular bonds, which reduces bonding with the water phase. This r...