Breakdown of Ieri mi sono fatta tingere i capelli.
ieri
yesterday
il capello
the hair
farsi
to have something done (to oneself)
tingere
to dye
Questions & Answers about Ieri mi sono fatta tingere i capelli.
Why does this sentence use sono instead of ho if the verb is fare?
Why is it fatta (ending in -a) instead of fatto?
Does the past participle ever agree with the thing being dyed (i capelli)?
No. In the farsi + infinitive construction, the past participle of fare agrees with the subject (the person getting the service), not the direct object (i capelli). It doesn't matter that i capelli is plural; the participle stays fatta for a female speaker.
Why does the Italian say i capelli (the hair) instead of i miei capelli (my hair)?