GREY! Our MicroSilver is pure natural silver, and silver has a grey colour to it, so it can be fully seen in our products. We wanted to give you the comfort of knowing that our ingredients and technology were in there, from the first moment you use our gels and/or open up our spray bottles, to the very last drop. You’ll see our work inside. We also knew you don't want your things to look grey and we took that into account. So the colour doesn't transfer. Try it and see for yourself. Now you see it, now you don't!