Geogard Ultra® (Powder)
INCI Name: Gluconolactone (and)
Sodium Benzoate
Also Known as GSB or Neodefend
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Key Product Benefits:
–Has a wide range of global regulatory acceptance
–Broad spectrum activity
–ECOCERT/COSMOS-accepted
–Wide applicability
–Added moisturization benefit
Geogard Ultra® is a synergistic, patented blend
comprised of gluconolactone and sodium benzoate. What makes this preservative
unique is the synergy between the two ingredients, allowing for its broad spectrum
efficacy. Typically, organic acids on their own are too weak and often require a co-preservative or booster in order to
perform optimally. The gluconolactone in this blend works together with the
sodium benzoate to act as an efficient preservative booster that is
also non-GMO. Geogard Ultra®’s gluconolactone works by slowly releasing
gluconic acid over time, which helps contribute to the preservation.
Formulation Recommendations
–Water soluble
–Compatible with a wide variety of formulation
ingredients as well
as most types of cationic, nonionic and anionic
systems
–Can be used effectively over a pH range of 3 to 6
and can be added
at both room and elevated temperatures
–Soluble up to 4% in ambient water; it can be
easily dispersed in
glycols and alkyl sulfates
–To maximize the pH stability of the final
formulation, it may be
necessary to employ use of a sodium citrate buffer
and pH
adjustment as described below...
1. Dose the final product with the required level
of Geogard Ultra®
along with a 1.5x amount of sodium citrate. So, a
2% dose of
Geogard Ultra® should be accompanied by 3% sodium
citrate
2. Mix thoroughly to ensure all solids have
dissolved and adjust
the pH of the formulation to 7.00-7.25 with 30%
sodium hydroxide
3. Finally, adjust the pH to desired final product
pH (pH 5.4–5.5
is ideal) with dilute sodium hydroxide or citric
acid solution
Recommended Use Level
0.75–2.0%
Appearance: Off White Powder
INCI: Gluconolactone (and) Sodium Benzoate
Applications
–Baby care
–Baby wipes
–Body butter
–Body wash
–Conditioner
–Cream
–Deo/ anti-perspirant
–Eye creams / gels
–Eye shadow
–Face lotion
–Face wipes
–Facial cream
–Foundation
–Hair gel
–Hand soap
–Lipstick/gloss
–Lotion
–Make up remover
–Oil in Water
–Powder
–Shampoo
–Suncare
–Toner
–Water in Oil
Efficacy
Microbiological Challenge Studies
Studies were run using different concentrations of
Geogard Ultra® in
various formulations to see efficacy against
various bacteria and fungi.
All samples were inoculated at the beginning of the
study, sampled at
7, 14 and 28 days.
In these challenge studies, the bacterial pool
consisted of S.aureus,
P.aeruginosa and E.coli, and the fungal pool of
C.albicans and A.brasiliensis.
