German reflexive pronouns are a category of pronouns that always refer back to the subject. Truly reflexive verbs cannot be used without their reflexive pronouns, which are usually in the accusative. Other verbs can be used in a reflexive and non-reflexive way, so the reflexive pronoun requires the dative and is replaced by an accusative object.
The reflexive pronouns take the same forms as personal pronouns. The only exception is in the 3rd person singular and plural, which has its own form: "sich".
Accusative | Dative | |||||||
Ich wasche | mich. | Ich wasche | mir | die Hände. | ||||
Du wäschst | dich. | Du wäschst | dir | die Hände. | ||||
Er/Sie/Es wäscht | sich. | Er/Sie/Es wäscht | sich | die Hände. | ||||
Wir waschen | uns. | Wir waschen | uns | die Hände. | ||||
Ihr wascht | euch. | Ihr wascht | euch | die Hände. | ||||
Sie waschen | sich. | Sie waschen | sich | die Hände. |