Cosmetics Formulation Development

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Nowadays, silver nano is being used. came to put in personal care products, pets care, so interested in trying to create a formula, but found that

Black precipitate will always occur in the product. Is this caused by silver reacting with other substances? If adding a chelating agent such as EDTA, will it help? Or do I need to adjust the formula? and would like to know which pH range of silver nano products is suitable for use?

hello

The type of Nano Silver that is chosen to use is ionic or colloidal.

If you choose to use ionic type and have problems, I recommend you to try colloidal instead.

The ionic type is suitable for use in a single formulation. No other charged elements are included.