Verbi riflessivi

An Italian verb is reflexive when the action carried out by the subject is performed on, or directed back to, the same subject. In order to make an Italian verb reflexive, just drop the -e of its infinitive ending and add the reflexive pronoun si. In the infinitive form, reflexive verbs thus end in -arsi (pettinare ‘to comb’ becomes pettinarsi), -ersi (mettere ‘to put’ becomes mettersi), or -irsi (divertire ‘to amuse’ becomes divertirsi).
When conjugating reflexive verbs, just place the proper reflexive pronoun (mi, ti, si, ci, vi, si) between the personal pronoun and the conjugated verb, as shown in the following table:

Lavarsi

c1 c2>
Personal Pronouns Reflexive Pronouns Conjugated Verb
io mi lavo
tu ti lavi
lui/lei si lava
noi ci laviamo
voi vi lavate
loro si lavano

Italian Reflexive Verbs are used more often than in English; sometimes you can use a reflexive verb in Italian but not in English:
Io mi sveglio alle sette - I wake up at seven (lit. I wake myself at seven)

Moreover, some reflexive verbs can also be used without the reflexive pronouns, and in such case their meaning changes:
Tu ti alzi - You get up
Tu alzi la sedia - You lift the chair

Reciprocal Reflexive Verbs

Some reflexive verbs describe a reciprocal action that involves more than one person. Because of the focus on multiple parties, when conjugating these verbs you have to use the plural reflexive pronouns ci, vi, and si, which agree with subject and verb form.
Io e Alex ci conosciamo da molti anni - Alex and I have known each other for many years now.
Tu e Anna vi incontrate spesso all’Università - You and Anna often bump into each other at the university.
Alex e Lorenzo si salutano all’aeroporto - Alex and Lorenzo say hello to each other at the airport.