Vaseline has many beauty applications, including taming flyaway hair, according to makeup artist Michelle Phan. Many hair products contain petroleum jelly, which is the main ingredient in Vaseline, states Wikipedia.
Petroleum jelly is used to smooth static or windblown hair, to tame unruly eyebrows or to smooth split ends between haircuts, shares Today Style. However, its presence in beauty products does not mean it is necessarily a healthy ingredient, according to the Huffington Post. Petroleum jelly locks in moisture but is not water soluble and thus blocks pores. It is also a by-product of oil refining and sometimes contains known carcinogens. Although Vaseline is highly refined and regarded as non-carcinogenic, other petroleum jellies are not necessarily as pure.