Okay, one of the personal side effects of the pandemic for me has been that is has been literally turning my hair white. So today I found a jar of blonde henna in the bathroom that I bought a year ago and I tried it. I mixed it with boiling coffee because they said that helps to cover grey and with olive oil, and it was really messy and now I smell like a haybale, but I like how it turned out and it didn't burn or give me an allergic reaction, which hair color does. It also seemed to help the texture.
It's not quite as white and kind of blended it all together better, I think.
It was cheap, too, about ten dollars for the jar, which will do two applications, and a dollar for the paint brush at dollar store, which I washed and can reuse.