If you have oily hair, yes you should definitely use conditioner and here's why. Conditioner is necessary for the health of your hair. It provides hydration, nourishment and protection that your shampoo does not. If you feel like conditioner makes your hair greasy or flat, you haven't found the right conditioner for you! Finding the best conditioner for your hair type means reading labels! When looking for the best conditioner for an oily scalp and greasy hair, look for Aloe Vera, Charcoal, and Pro Vitamin B5. The following oils are also hugely beneficial and are the best conditioner oils for oily hair: Coconut Oil, Argan Oil, Olive Oil, Jojoba Oil and Geranium Oil. Always thoroughly rinse out your conditioner to avoid any conditioner residue and make sure your conditioner is free of sulfates, parabens and phthalates.