Main Uses and Benefits: Carnauba wax is often used as a hardening agent, thickener, and emulsifier. When used in cosmetics, it gives the product a smooth application and glossy finish. It also helps keep the product in a pliable yet solid form. Find It In: Lip balms, eyeliners, and mascaras. It is commonly used as a thickening agent in cosmetics and other skincare products like mascara, deodorant, eye shadow, lipstick, dental floss, and so on. As far as being safe for the body, carnauba wax is non-toxic, hypoallergenic, and inert.Carnauba wax can produce a glossy finish and as such, is used in automobile waxes, shoe polishes, dental floss, food products such as sweets, instrument polishes, and floor and furniture waxes and polishes, especially when mixed with beeswax and with turpentine.Carnauba wax comes from carnauba palm leaves. It is collected by drying out the leaves, beating them to loosen the wax, and refining and bleaching the wax to use in various applications. Since carnauba wax comes from a plant, it is considered a natural plant wax.