Stearic Wax- Traditionally used as a thickening agent in lotion, this vegetable derived waxy substance is also used as a hardening agent in soaps. Stearic acid is also used as a hardening agent in candles, vegetable or paraffin based.

Stearic acid (C18H36O2) is a long-chain fatty acid that's found in animal and vegetable fats. It has a polar head group that can bind with metal cations and a nonpolar chain that makes it soluble in organic solvents. Here are some uses for stearic acid: 

Cosmetics

Stearic acid is used in many cosmetics, including shampoos, shaving creams, and soaps. Esters of stearic acid with ethylene glycol (glycol stearate and glycol distearate) can create a pearly effect in these products. 

Pharmaceuticals

Stearic acid can be used as a lubricant in the production of tablets, and it can also protect drugs from degradation and affect how tablets dissolve. 

Other uses

Stearic acid can also be used as a food additive, in the production of detergents, candles, and insulators, and in the food packaging industry.