What is the fine-grained topic of the following text: But blending a few drops of oils like almond or jojoba oil, or pairing your liquid foundation with a hint of hydrating serum, can actually make your foundation more blendably smooth and soften up the finish of your foundation — it will enhance the effects without giving off a cakey effect or running the risk of drying your skin out further. Only return the topic.
Improving foundation application with oils and serum