Compatibility of Prebiotic and Antimicrobial in Formula

Subject: Prebio-care and MicroKill in the same formula

Regarding your question about using Prebio-care and MicroKill together in the same formula:

You are correct in understanding the function of both ingredients.

• Prebio-care is a prebiotic that nourishes and supports the growth of beneficial microorganisms on the skin.
• MicroKill (Quaternium-73) is an antimicrobial agent designed to kill microorganisms, including bacteria and fungi.

Using an antimicrobial like MicroKill in the same formula as a prebiotic like Prebio-care is generally not recommended. The purpose of the antimicrobial is to reduce or eliminate microbial life, which would counteract the prebiotic's function of promoting beneficial microbial growth.

Therefore, combining them in the same product would likely negate the intended benefits of the Prebio-care. It is best to avoid using these two types of ingredients together in the same formulation if the goal is to support the skin's beneficial microbiome using the prebiotic.