Jojoba oil is actually composed of liquid wax esters rather than oil. The body’s natural sebum also contains wax esters, which act as a sort of natural moisturiser and environmental barrier for the skin. Jojoba oil can prevent the skin from becoming too oily. Because the structure of jojoba oil so closely resembles natural sebum, it can actually trick the skin into producing less natural sebum, which, unlike jojoba, can clog pores. Jojoba oil may help treat acne, both by reducing sebum production and by protecting the skin from harmful bacteria.