Skin stains from test kit?


TFP Expert
Mar 2, 2011
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.
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