Home Cosmetic Science Talk Formulating Does solution of 1% powdered dye need preservative?

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  • Does solution of 1% powdered dye need preservative?

    Posted by Abdullah on November 1, 2021 at 9:03 am

    Just to know, if i make a solution of 1% powdered dye in water and store it for later use in shampoo and lotion, does it need preservative?

    Abdullah replied 2 years, 7 months ago 2 Members · 2 Replies
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