How to strip my hair?

my natural hair color is dirty blonde and i have dyed it burgundy and other varies shades of brown and i have never bleached it. but, i never stripper my hair after each color i just added a different on top. how can i get these dyes out of my hair? my natural color is coming in at the roots and it’s so pretty i just miss it 😩 i need recommendations please!!!

**im trying to stay away from salons and more expensive products if possible, im a broke college student).

thank you ladies in advance!!!!!💘