Teñir vs teñirse
Mucha gente tiñe el cabello cuando le empiezan a salir canas. Many people color their hair when it starts going gray.
I found this example on SpanishDict. Why isn't there a "se" before "tiñe". Teñirse means to dye one's hair, but teñir also means to color hair. When would I use teñir vs teñirse?
2 Answers
"Teñir" means to dye (in general). "Teñirse" means to dye one's hair (specifically).
Meaning that "teñir" can be used when dying anything, and "teñirse" for hair only.
When people get old, they may want to arrest its symptoms and decide to get their hair dyed. For that reason "teñir". If the hair studio, or whatever you call it, does it, it's "teñir". If the victim of fossilization does it him or herself, it's "teñirse". "Victim"....Jaja, Me muero de risa. Ah, other stuff happens too.