Yes, you can wet your hair after getting a perm, but it is generally recommended to wait at least 48 hours before washing it. This waiting period allows the curls to fully set and the bonds in your hair to stabilize, ensuring that your perm lasts longer and the results are more defined.
You can get your hair wet (for example, if you’re caught in the rain or swimming), but avoid shampooing or conditioning it for the first 48 hours. Also, avoid using heat tools or putting your hair in tight styles, as this can disrupt the setting process.