As well as the waxes, another important component of lipsticks is oils. The most commonly used is castor oil, which can often comprise the largest percentage of the lipstick, but others, such as olive oil and mineral can also be utilised. The oils give the lipstick emollient, or skin-softening properties; they also make application of the lipstick easier, and contribute glossiness to its appearance. Additionally, they act as solvents for soluble dyes used in the lipstick, or dispersing agents for any insoluble pigments.