RPZL sent me home with instructions on how to care for my extensions, including the heat-styling and sulfate-shampoo prohibitions. I was informed: never go to bed with wet hair, and before sleeping, put your hair in a loose braid or a low bun.
Also, since the natural oils from my scalp weren't migrating all the way down, the ends often got very dry. RPZL recommended a deep-conditioning mask, applied to my hair before bed on nights when I planned to wash my hair the next morning. This made a huge difference.
The biggest challenge was that the extensions tangled more easily than my real hair, so I found myself brushing my hair as much as five times a day. Just like a real mermaid.