Plaster is most commonly used for concrete pools. There are other options available, like exposed aggregate. Let's explore your options.
There are three types: in-ground pool with vinyl liners, fiberglass and concrete.
Retiling can also be used to restore your pool's life. This process is similar to indoors. A scratch coating is applied, tiles and grout are laid, and then the pool is re-opened. Tiling can be a time-consuming and expensive process depending on how large your pool is. It can give you elegant results.