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Section: Cosmetic Ingredients > Preservation
Literature/Data
Assessing the Safety of Parabens: Percutaneous Penetration and Risk Analysis
In cosmetics, parabens are widely used due to their low cost and efficacy. In recent years, however, some reports have claimed that these materials exhibit estrogenic activity, which has led to attempts to replace them in formulations. This article reviews penetration studies of parabens spanning the past 20 years to determine whether they pose a risk to human health.
Literature/Data
Assessing the Safety of Parabens: Percutaneous Penetration and Risk Analysis
In cosmetics, parabens are widely used due to their low cost and efficacy. In recent years, however, some reports have claimed that these materials exhibit estrogenic activity, which has led to attempts to replace them in formulations. This article reviews penetration studies of parabens spanning the past 20 years to determine whether they pose a risk to human health.
Preservation
Ingredient Profile—Benzoic Acid/Sodium Benzoate
Benzoic acid (BA) is a leading choice due to its long and successful history of use preserving foods, drugs and cosmetics. Affirmed as GRAS (Generally Recognized As Safe) by the US Food & Drug Administration (FDA), BA and its sodium salt, sodium benzoate (NaB), are perhaps the most globally acceptable preservatives that have managed to avoid the controversy associated with many of the industry’s tried-and-true preservatives.
Preservation
Emerald Kalama Introduces its Solution-in-Water Sodium Benzoate
Emerald Kalama launched a solution-in-water form of its namesake preservative, Kalama Sodium Benzoate Liquid, which expands the company's product offerings for sodium benzoate.
Preservation
Curie Co. Breaks pH Barrier with Launch of AmpliPQ, a High-Performance Sodium Benzoate Preservative
The system significantly extends the antimicrobial effectiveness of sodium benzoate up to pH 8.5 — far beyond its traditional range, per the company.
Claims/Labeling
Unilever’s TRESemmé Shampoo Alleged to Cause Irritation, Hair Loss
A recent class-action lawsuit has emerged against Unilever/Conopco Inc. for its TRESemmé Keratin Smooth Color Shampoo due to reports of DMDM hydantoin content allegedly causing hair loss and scalp irritation.
Method/Process
The Safety Factor in Preservative Efficacy Testing
The authors explain how preservative efficacy testing is done to determine whether a formula is adequately preserved. Product contamination problems are frequently caused by inadequate preservation.
Preservation
SCANCOS Defends Paraben Safety, Addresses Nanoparticles
The Scandinavian Society of Cosmetic Chemists (SCANCOS) defended the safety of parabens and addressed the safety of nanoparticles at its Sustainable Cosmetics Conference, held Nov. 5-6, 2009 in Malmö, Sweden.
Microbiology
Determining Preservative Efficacy in W/O Formulas, Part II: Making Microbiological Safety Assessments
The relevance of microbiological tests for w/o formulas has been questioned, mandating a more holistic approach. This second article in a series examines the failure rate of PETs for w/o products but looks at why this does not mean insufficient stability.
Safety
Safety Alerts: Drunk Elephant's 'Mix-up,' 285 European Cosmetics with Banned Ingredients, Dynarex Extended Recall
This round-up highlights recent cosmetic safety alerts/recalls. These include: Drunk Elephant's ingredient "mix-up," ECHA's findings that 6% of ~4,500 cosmetics reviewed contained banned ingredients, and Dynarex's recall extension over possible asbestos.
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