Jojoba oil is said to have a similar composition to sebum, helping to regulate excessive oil production! It's also great for hydration. As someone with extremely dry skin, I apply a single drop at the end of my skincare routine, gently rubbing it between my fingertips before patting it on. Using just one drop at a time means this amount will last for ages!
There are no downsides, honestly! This is my holy grail product. It's affordable and so versatile!
Just be careful not to use too much - a single drop is perfect. Any more and you might end up with a greasy, slippery feeling on your skin!