Mixing Galactomyces Ferment Filtrate (Pitera) and Apple Stem Cell Extract

Yes, you can mix Galactomyces Ferment Filtrate (Pitera) with Apple Stem Cell Extract. You can use the Pitera as your base and add the Apple Stem Cell Extract to it.

Regarding preservatives, if the Galactomyces Ferment Filtrate you are using already contains a preservative (such as Butylene Glycol, which is present in the standard type), you do not necessarily need to add an extra preservative to the mixture. The preservative in the Pitera base helps maintain the stability and prevent microbial growth in the final blend.

For the Apple Stem Cell Extract (AppleCell™ Powder), it is a water-soluble powder. When mixing, ensure the temperature of your base is below 40°C and the pH is within the recommended range of 3.5-6.5 for the Apple Stem Cell Extract.