Restock Alert Challenge Testing (pet) Now 55% Cheaper [yigaeTj1]

Challenge testing is a critical step in validating the effectiveness of your product’s preservative system. Our expert-led challenge testing service helps ensure your cosmetic formulations remain safe, stable, and compliant—giving consumers and regulators full confidence in your brand.

Why Challenge Testing is Important
If your product contains water, it is at risk of microbial contamination during use. To legally sell cosmetics in the UK, EU, and many other regions, you must demonstrate that your preservative system effectively controls bacteria, yeast, and mold. Challenge testing, also known as Preservative Efficacy Testing (PET), simulates contamination by introducing microorganisms and monitoring how well your product neutralises them over time. We follow ISO 11930 and USP <51> standards—accepted by regulators worldwide.

What We Test
We conduct challenge testing on a wide variety of cosmetic and personal care products, including:
✔ Creams & Lotions
✔ Gels, Serums & Cleansers
✔ Shampoos & Conditioners
✔ Body Washes & Scrubs
✔ And more!

What You’ll Receive