* Ingredients: Make sure the oil doesn't contain any ingredients that could cause irritation or an allergic reaction. Test a small amount on your skin first.
* Thickness: Hair oil may be thicker than other lubricants, so it might not provide the same level of slip.
* Clean-up: Hair oil can be more difficult to clean up than water-based lubricants.
* Condoms: Oil-based lubricants can degrade latex condoms, making them less effective. If you're using a condom, use a water-based or silicone-based lubricant instead.