If I was on a desert island and could only have one beauty product, I'd probably choose coconut oil. The stuff is amazing! I keep a jar in the bathroom and use it for absolutely everything!
It's a great leave-in/styling conditioner if you have thick, dry, curly hair like mine. Rub a little bit between your hands to melt it (it's solid at room temperature but will melt with your body heat into a liquid) and spread it through your wet hair. Stay near the ends of your hair and don't overdo it.
Coconut oil is also a great body lotion. I scoop out a handful, melt it by rubbing my hands together and spread it all over my body, focusing on the dry parts. An added bonus is that it has a really pleasant coconut smell that I love.
Want a quick lip balm? Spread a little on your lips with a fingertip. Want a lip scrub? Melt a bit of coconut oil in the microwave, add a packet of sugar and mix together. Store in a tiny Tupperware container. Dab a bit onto your lips and scrub with your finger.
Need a quick makeup remover? Coconut oil to the rescue. It melts off eye makeup.
I even use it during tick season on my dog as an extra protection. Ticks supposedly hate it (and no harm if Doki licks it off).
You can even cook with it if you want, but I recommend keeping a separate jar just for beauty use. Nobody likes stray hairs in their stir fry!