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Type: Article

Section: Testing > Safety/Stability

'[Sunscreen] developers will be able to innovate more efficiently while maintaining high standards of quality and safety for consumers.'

[updated] How ISO's Endorsement of Two Test Methods Will Enlighten Sunscreen Development

After 10 years, sunscreen developers are nearing the finish line for more ethical, cost efficient, reliable and faster testing thanks to ISO's endorsement of two standards. The final vote is in September 2024. Here, two experts explain what this means.

In evaluating how different solvents may affect the rheology of personal care formulas, it is helpful to consider that different formulation types have distinct relationships between viscosity and elasticity depending on the factors generating their elastic properties.

How Natural Butylene Glycol Advances Market and Rheology Dynamics

Demand for sustainable ingredients in cosmetics and personal care is well-known. Here, a sustainable natural butylene glycol is described to advance this trend and its effects on viscosity and elasticity are assessed in five test formulas.

Microbiological test methods for w/o formulas have raised questions in terms of their suitability. They also require a more critical view of the results than other product types. This first article in a two-part series reviews the limitations of such methods and options for their optimization. It also critically observes to what extent test results provide relevant information for an appropriate safety assessment. Part II, in August 2022, will explore a holistic approach to more accurately assess microbiological safety.

Determining Preservative Efficacy in W/O Formulas, Part I: Test Performance and Limitations

Microbiological test methods for w/o formulas have raised questions in terms of suitability. They also require a more critical view of the results than other product types. This first article in a two-part series reviews the limitations of such methods.

For multifunctional products such as moisturizing hand sanitizers, the sanitizer claim requires a significant reduction (2-3 log) of a microorganism population while the moisturizer claim requires data showing an increase in skin moisture.

Testing the Safety and Efficacy of Multifunctional Personal Care Products, A Primer

Multifunctional products may offer solutions to consumer challenges but as the needs of consumers grow more complex, so do their safety and efficacy testing. This article provides a primer on these considerations.

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Analyze, Optimize: Ensuring Pollution Won’t ‘Get Under Your Skin’

Anti-adhesion, removability, anti-penetration and cleansing properties were assessed in steps, as described here, to optimize formulas for effective anti-pollution protection. An approach was designed to test cosmetic ingredients and formulas for their abilities to suppress the negative effects of pollution in skin.

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Toxicological Evaluation of Cosmetics: A Primer

A cosmetic toxicologist can provide a clear-eyed view of the potential hazards and quantifiable risks of a product based on its composition. This primer briefly explains how.

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Confounding Labels: One ‘Natural’ = 100+ ‘Chemicals’

As most formulators are aware, creating a product with three or more botanicals in it means a final formula containing more than 200 chemicals. How is this better for skin? It's not, according to this commentary.

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Soothing Moves: Cannabis Sativa Cell Culture Alleviates Inflammation

The field cultivation of hemp is tasked by today’s large-scale demand. Here, a Cannabis sativa cell culture extract is proposed as a sustainable alternative. After initial characterization, the extract was tested as described here for efficacy against inflammatory markers for skin-soothing activities.

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“COSMETICS LAB” magazine – Quality Control

Read about techniques used for quality control of cosmetics in "COSMETICS LAB" magazine. How to benefit from greener extraction methods, chromatography, NIR and more when demonstrating product safety

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Progressing Safety, Sustainability and Sincerity with Synthetic Ingredients

As consumers demand complete transparency that extends beyond labels and claims, brands need to provide comprehensive information on the entire supply chain and product lifecycle...

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Standardizing Safety: ISO Validation and Sun Protection Tests

In addition, methods under review pertaining to sun protection are discussed. The ISO sets proposed standards and test methods for nearly every industry; its validation process is described here.

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Strat-M® Membrane for Transdermal Diffusion Testing – FREE Sample

Strat-M® membrane is a synthetic, non-animal based model for transdermal diffusion testing that is predictive of diffusion in human skin and is an alternative to animal testing. Learn more about this innovative technology and request a free sample.

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Patch Testing, Irritation and Sensitization: Safety Testing in Cosmetics

An online exclusive by Anjali Salvi, Ph.D. about product safety and what needs to be done for consumers. Salvi discusses how regional conditions, intended use of the product and method of application can be a huge factor in determining product safety for consumers worldwide.

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Efficacy vs. Risk: A Contemporary Review of Sunscreen Filters

Being protected from sunlight would seem essential to preventing DNA damage that leads to skin cancers; however, the sunscreen filters used pose some risks of their own. This brief review highlights the safety vs. risk of sunscreen filters and approaches to improving their efficacy.

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Anti-aging Safely: Bakuchiol for Skin-building Benefits

"Bakuchiol being non-irritating, as opposed to retinoic acid (which can cause irritation), is really the differentiating factor and what’s cause for excitement with this study."

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Expert Opinions: Clean Beauty

Featuring insights on label transparency, performance, safety, greener chemistries, Pickering emulsions and more, this month's collection of "Expert Opinions" is all about clean beauty. Click through to the digital magazine for the complete article.

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A Safety, Toxicity and Irritation Testing Primer

To ensure a product’s success, especially in light of ‘clean beauty’ tenets, it must be tested for stability as well as safety and efficacy. The following primer offers an overview of key tests to perform as products are developed and prepared for launch. Click through to the digital magazine for more.

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Back to Basics, Part III: Testing for Preservation and Stability

Product quality and consumer health are on the line when it comes to a product's microbiology and stability status. This article describes testing guidelines in both the U.S. and EU to assist the formulator with methodology and production.

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