Saturday, October 23, 2010

Preservatives: Germaben II

Germaben II is a liquid broad spectrum preservative that should be used at 0.5% to 1% in the cool down phase of your watery creations. The INCI is Propylene Glycol (56%), Diazolidinyl Urea (30%), Methylparaben (11%), and Propylparaben (3%), which means it is a formaldehye releaser that contains parabens.

Because it contains three different preserving chemicals, it is suggested for use as a preservative for products that are hard to preserve, like those containing a lot of botanicals or proteins, like a toner or lotion with a lot of extracts and hydrosols. (I like it for things like strawberry extract that are very hard to preserve!)

Although the manufacturer notes it can be added to your products at emulsification temperatures - up to 80˚C - it's best used in your cool down phase at less than 60˚C.

Summary of Germaben II: 
INCI: Propylene Glycol, Diazolidinyl Urea, Methylparaben, and Propylparaben.
Usage: 0.5% to 1% in the cool down phase of your creation
Water soluble, so it's not suitable for anhydrous creations
pH range: 3.0 to 7.5


daniel said...

Is this when you would add some of the gum you said is hard to preserve? Is it the sugar in the gum that's basically "food" for baddies to eat?

Susan Barclay-Nichols said...

Hi daniel. Botanical ingredients tend to be quite hard to preserve, so using something like Germaben II can ensure you get good preservation. I've tried more times than I can count to preserve something like strawberry extract with liquid Germall Plus, and it just gets gross and mouldy in a really short period of time. Germaben II works really well!

Melanie (Purplesims) said...

Hi Susan. Would you suggest using this preservative in solutions without water, but water based produts like aloe vera and honey?
Thank you,

Susan Barclay-Nichols said...

Hi Melanie. Do you mean a product that doesn't contain water at all but instead has honey and aloe vera? If so, then yes! You still need a preservative in a product like that, and Germaben II is a great choice!

Pam said...

Hello Susan I hope you are feeling better! Your information is vital to me!! I have a question about using presevatives. I'm going to use Germaben II for my loition. The recipe says to usee .5-1% prsevative. How do I determine how much to use(.5 or 1%)?