These are verbs that describe actions that you do to yourself. They tend to be morning and nighttime routines, as you get ready for the day or end of night.
They must be used with the reflexive pronouns. If these verbs are used to do something to something else or someone else, then they are no longer reflexive.
Se laver – to wash
Je me lave Nous nous lavons
Tu te laves Vous vous lavez
Il se lave Ils se lavent
Elle se lave Elles se lavent
On se lave
Elle se lave les mains. = She washes her hands. (reflexive)
Elle lave la voiture. = She washes the car (not reflexive)
when talking about your body parts with a reflexive verb, you do not say “my” hands but “the” hands, since you are already usig a reflexive pronoun.