Dental and oral care products require careful evaluation to support product quality, stability, microbiological integrity, safety, and regulatory compliance. Pentyl Labs supports a range of analytical, microbiological, and stability testing services applicable to oral care formulations including dental gels, toothpastes, mouthwashes,
How brands are testing smarter and releasing faster The problem with traditional quality control Many cosmetic brands still rely on traditional cosmetic quality control testing approaches where every batch is tested the same way, regardless of risk or variability. Every batch
Introduction Selling cosmetics on Amazon requires more than a strong product and branding — it requires proof that your product is safe, stable, and compliant with U.S. regulations. Amazon increasingly requests documentation from sellers to verify product safety and labeling. If
A Practical Guide to Microbial Risk Assessment for Low-Risk Cosmetic Products Overview ISO 29621 cosmetics guidance provides a framework for microbiological risk assessment of products with low likelihood of contamination. Unlike traditional test methods such as USP <61>/<62> or ISO 11930,
The ISO 11930 challenge test evaluates whether preservatives in cosmetic and personal care products effectively control microbial contamination. Manufacturers perform this test during product development to ensure formulations remain safe and stable throughout their shelf life. One of the most widely
What Is Preservative Efficacy Testing (PET)? Preservative efficacy testing (PET), also known as preservative challenge testing, is used to evaluate how effectively a product’s preservative system protects against microbial growth over time. PET assesses whether a formulation can control bacteria, yeast,
