Hair turned purple

US Henna Guys

I quit dying my hair years ago but it’s getting quite grey and a friend suggested henna. I bought a dark brown brown henna hair dye on Amazon,followed the directions but it turned out a lot lit lighter in the grey areas. So I bought the indigo color. I did not realize at the time the indigo was a completely different powder, I thought it was a color. Anyway, most of my hair is fine but Al the grey turned purple. I tried doing the dark brown again last night but it’s still purple. I searched the group and found a lot of ideas but now I’m a little overwhelmed with options and still have questions.

Should I wait a few weeks before trying again or just go right over the top of what I already have on there? I haven’t washed it yet after the last round because I just did it last night.

Should I use just straight henna? Will i still need to do indigo again or will the indigo base with henna on top be sufficient?

Also seeing a lot of varying advice as far as adding acv, coffee, lemon, salt, how long to cure, etc. help! I work at a law firm and they frown upon purple hair lol