* "Teñirse el pelo" means "to dye your hair." You can use this verb with the color you want to dye your hair, such as "castaño" (brown), "rubio" (blond), or "negro" (black).
* "Decolorarse el pelo" means "to bleach your hair." This will lighten your hair so that you can then dye it a different color.
* "Aclararse el pelo" means "to lighten your hair." This can be done with bleach or with a lightening shampoo.
* "Oscurecerse el pelo" means "to darken your hair." This can be done with a dark hair dye or with a henna rinse.
Here are some examples of how you could use these verbs in sentences:
* "Me teñí el pelo de castaño." (I dyed my hair brown.)
* "Me decoloré el pelo para poder teñírmelo de rubio." (I bleached my hair so that I could dye it blond.)
* "Me aclaré el pelo con un champú aclarador." (I lightened my hair with a lightening shampoo.)
* "Me oscurecí el pelo con un tinte oscuro." (I darkened my hair with a dark hair dye.)