10. The formula of W/O emulsion base is: white wax 12%, cetyl ester wax 12.5%, mineral oil 56%, sodium borate 0.5%, and water 19%. How many mL of water will you should add to make 270 g of this base? a. 19 b. 38.7 c. 45.5 d. 51.3 11. The formula of O/W emulsion base is: sodium lauryl sulfate 1%, propylene glycol 12%, stearyl alcohol 25%, white petrolatum 25%, purified water 37%. How many grams of propylene glycol is needed to make 10-ounce base? a. 12 b. 25 c. 36 d. 39