Silver was also used as an antimicrobial for wounds. Modern colloidal silver products are sprayed or applied to the skin.

From Cleopatra to nanotech: precious metals in beauty regimes according to influencer Renee Chow, Joyce Beauty's Harriet Lee, and Subtle Energies spa founder Farida Irani Precious metals and minerals ...

But even more curious was the fact her skin had turned blue - a result of ingesting fatal doses of colloidal silver, which she believed would cure her from all illnesses but which was actually ...