No, it does not.
Yes it can.
Depending on the individual the lifespan of high temp fibre differs and also the curly fibre is more likely to have a shorter lifespan than straight (3 to 6 months).
Like any other human hair, it is important to wash the hair every 2-3 weeks to remove any build-up or dirt. Blow-dry and allow to dry thoroughly. Apply a little bit of serum to restore and maintain a natural shine. Sleep with silk or satin scarf at night.