Hey beauty✨ Thank you ! Could be due to different undertones in our hair. My hair has a red undertone once the melanin breaks down. It’s possible that we also used different brands (I dyed my hair twice, with two different brands), as well as the duration we let the color sit for . I find that box dyes have to go through different phases before it arrives to the desired color over time. Nonetheless, I’m sure your hair looks great!