Biege, the personal care formulator has several options when selecting products in the benzoate family—benzoic acid, sodium
benzoate and benzyl alcohol—based on solubility needs (water
and/or organics) and pH of the formulation. Often, these products are used in combination with other benzoates and/or with
other types of preservatives, such as phenoxyethanol.
Emerald has new applications data to support use of its food-grade preservatives in cleansing systems as a“drop in” preservation solution, said Vaughn Biege. Unlike many other paraben-free
alternatives, these materials are economical for all surfactant systems, offer improved color stability, and are considered globally
acceptable, in addition to helping formulators to avoid other ingredients that may concern consumers.
Traditionally, benzoate-type preservatives are erroneously believed to be limited to lower pH formulations. New data shows
efficacy in skin neutral and above wash-off systems, passing USP
51 challenge testing at pH ranges from 4. 5-6. 5 using both sodium
benzoate and combinations with benzyl alcohol.
Emerald produces several grades and different physical forms
of food- and pharmaceutical-grade benzoic acid and sodium
benzoate. Emerald’s Kalama benzyl alcohol, produced by an oxidation process, is chlorine-free and extremely low in odor, having minimal influence on the aroma of the final product, noted
“Consumers also continue to increasingly look for labels for
organic ingredients and for non-irritating ingredients for sensitive skin; sodium benzoate is approved for use in cosmetics by
Ecocert, an international organic certification organization, and
is considered non-irritating to the skin by a WHO assessment,”
The team at Sharon Laboratories has been developing prod-
ucts under a new approach of“natural like,” or“a bridge between
natural and synthetic,” according to business unit manager
Naama Eylon. She explained,“We are trying to close the gap be-
tween the consumer’s desire for‘green’ and the formulator’s need
for a preservative that offers efficacy, stability, consistency, safety
and is also globally accepted as well as cost-effective.”
This year, Sharon Laboratories introduced SharoSense.
Launched in April, this line offers broad spectrum, highly effec-
tive products, based on a patented blend of thymol and linalool.
“The concept is to rely on naturally occurring ingredients for
a green and natural approach which consumers prefer, while
creating a synthetic blend, to achieve the qualities the manufac-
turer needs,” said Eylon.“True natural preservatives are available,
suitable for organic products and for specific applications requir-
ing such a solution. The Sharon Biomix line, based on a blend of
organic citrus extracts, is the answer for this market. It delivers
strong broad-spectrum protection and can meet ‘preservative-
free’ claims, ‘100% natural,’ Ecocert and more. Biomix preserva-
tives are non pH dependent and highly soluble.”
The demand for alternative preservatives with mild safety
profile will keep growing, observed Fana Makonnen, global tech-
nical marketing manager, Inolex, Philadelphia, PA.
“Consumers want safe and natural products that are certified because they have been screened to a standard that identifies
them to be natural and safe,” she added.
According to Makonnen, ingredients like Spectrastat G2-N
are ideal to meet these demands. It was launched this past April
at In-Cosmetics Paris, France, expanding the patented Spectrastat
CHA range to include an option for use in organic personal care
products under NSF/ANSI 305-2012.
The CHA range is a multi-mechanism alternative preservative
system that uses a blend of a unique patented chelating agent
caprylhydroxamic acid (CHA) with an assortment of alcohols and
glycols as a part of hurdle technology, providing safe preservation
for all formulation types. Spectrastat G2-N is an NSF certified
option within the CHA Spectrastat range.
Makonnen told Happi that Spectrastat G2-N and the
Spectrastat CHA range are alternative preservative systems that
don’t contain biocides or typical preservatives. Instead, they use
a combination of multifunctional agents such as the chelating
agent caprylhydroxamic acid that have“excellent” efficacy as biostatic and fungistatic agents. Spectrastat G2-N is ideal for organic
or natural formulations where a paraben-free or preservative-free
claim is needed. Similar to others in the Spectrastat CHA range,
Spectrastat G2-N also performs superbly at neutral pH, a state
where many other fungistatic materials are ineffective, she said.
Every formulation is unique, so it’s ideal to use the preservative that is optimized for your formulation. According to David
Koehl, global business manager, Home & Personal Care for Troy
Corporation, Florham Park, NJ, formulators of personal care and
cosmetics products don’t understand the performance advantages of broad-spectrum preservatives.
“While these products provide protection against both bacteria and fungi, suppliers typically offer only one blend ratio. The
result is poor cost performance, because personal care manufacturers are forced to pay for either extra bactericide or extra fungicide,” he explained.
To address this market need, Troy Corporation introduced the
TroyCare FE and PE series of customized broad-spectrum preservative blends developed specifically for personal care and cosmetics applications. Troy is also introducing the EPP series to the
Skin care is a sector
big on utilizing the