R-0007 sodium thiosulfate might take it off.
Read the sds sheet before trying it.
If you try it, just do it on a small spot and then wash well.
As far as I know, it's not dangerous, but any chemical can have an adverse reaction with some people.
I am not recommending that you try this.
Do at your own risk and only after doing your own research on whether or not it's worth trying.
You can also try vitamin C (ascorbic acid). Crush some tabs and dissolve in water to make a paste before applying.
Or try hydrogen peroxide.