Science Buddies: "Ask an Expert"

Posted: **Fri Apr 24, 2020 2:37 pm**

Hi,

Is there a non- toxic stain that can penetrate the epidermal layer of the human skin and diffuse down to the dermal layer?

Posted: **Tue Apr 28, 2020 4:02 am**

can you describe your project? it’s not clear how you will label the substance to track

Dyes for Human Skin