CL - COS logo graphic 01 FINAL-1

Understanding High-Profile Contaminants to Protect Your Brand and Consumers Through Testing

Webinar, Part One

Wednesday, Dec. 9 | 10 AM PST | 1 PM EST

Chemical contaminants such as benzene, DEG/EG, residual solvents, and heavy metals can pose risks to consumer safety, product quality, and brand reputation. Recent product recalls highlight the importance of contaminant testing for cosmetics, OTC drugs, and dietary supplements.

Join our experts as they discuss high-profile contaminants, how they enter raw materials and finished products, and key regulatory requirements, including FDA guidelines and California Proposition 65.

You'll also learn how analytical testing methods detect and quantify contaminants, understand detection limits, and interpret testing results to help ensure product safety, support regulatory compliance, and protect your brand.

Complete the form to register. Can't make the time? Register now and we'll email the recording link afterward.


What You'll Learn:

  • How recent product recalls highlight the importance of contaminant testing and consumer safety.
  • How chemical contaminants can enter cosmetics, OTC drugs, and dietary supplements through raw materials, manufacturing, and packaging.
  • The potential risks associated with high-profile contaminants, including benzene, DEG/EG, residual solvents, and heavy metals.
  • Where contaminant testing fits into product development, raw material qualification, and finished-product testing.
  • Key FDA regulatory requirements, California Proposition 65, and applicable industry standards for cosmetics, OTC drugs, and dietary supplements.
  • How heavy metals testing detects potentially harmful elements and supports product safety.
  • Understanding analytical testing methods, limits of detection (LOD), and limits of quantitation (LOQ).
  • How to interpret contaminant testing results to support product quality, safety, and regulatory compliance.

Register Now

Webinar, Part One

Wednesday, Dec. 9 | 10 AM PST | 1 PM EST

Chemical contaminants such as benzene, DEG/EG, residual solvents, and heavy metals can pose risks to consumer safety, product quality, and brand reputation. Recent product recalls highlight the importance of contaminant testing for cosmetics, OTC drugs, and dietary supplements.

Join our experts as they discuss high-profile contaminants, how they enter raw materials and finished products, and key regulatory requirements, including FDA guidelines and California Proposition 65.

You'll also learn how analytical testing methods detect and quantify contaminants, understand detection limits, and interpret testing results to help ensure product safety, support regulatory compliance, and protect your brand.

Complete the form to register. Can't make the time? Register now and we'll email the recording link afterward.


What You'll Learn:

  • How recent product recalls highlight the importance of contaminant testing and consumer safety.
  • How chemical contaminants can enter cosmetics, OTC drugs, and dietary supplements through raw materials, manufacturing, and packaging.
  • The potential risks associated with high-profile contaminants, including benzene, DEG/EG, residual solvents, and heavy metals.
  • Where contaminant testing fits into product development, raw material qualification, and finished-product testing.
  • Key FDA regulatory requirements, California Proposition 65, and applicable industry standards for cosmetics, OTC drugs, and dietary supplements.
  • How heavy metals testing detects potentially harmful elements and supports product safety.
  • Understanding analytical testing methods, limits of detection (LOD), and limits of quantitation (LOQ).
  • How to interpret contaminant testing results to support product quality, safety, and regulatory compliance.

Register Now

Meet Our Panelists

Professional Headshot_jonathon_hilz

Jonathon Hilz
Business Development Manager, Certified Laboratories Cosmetics, OTC and Supplements Testing

Jonathan Hilz is a Business Development Manager at Certified Laboratories with an extensive background in analytical chemistry, regulatory compliance, quality assurance, and laboratory operations. His career includes nearly a decade of hands-on analytical chemistry experience, as well as a dedicated regulatory compliance role focused on ensuring laboratory practices and quality systems aligned with FDA guidelines.

Throughout his career, Jonathan has supported analytical testing and regulatory compliance initiatives across the cosmetics, personal care, OTC pharmaceutical, and dietary supplement industries. Today, he leverages his technical and regulatory expertise to help manufacturers and brand owners navigate analytical challenges, develop effective testing strategies, and meet evolving quality and regulatory expectations. 

His multidisciplinary background provides a unique perspective on the intersection of laboratory science, regulatory compliance, and commercial operations.

Lisa_el_Shall_300x375

Lisa El-Shall
Senior Director of Drug & Device Consulting
EAS Consulting Group

Lisa El-Shall has a B.S. in Chemistry from the University of North Carolina at Chapel Hill and an M.S. from the University of California, Los Angeles in Biochemistry. She has extensive experience in consumer healthcare both in research and development and quality and has held leadership positions in the analytical laboratory and quality. For the past 11 years she led the Research and Development Quality group at Pfizer and GSK with global responsibility for areas including development, clinical supply production/release, clinical study oversight, and business development quality. She has a proven ability in establishment, implementation, and maintenance of fit-for-purpose standards, systems, and regulatory inspection compliance.

Rasha_Abueid_300x375-1-1

Rasha Abueid
R&D Supervisor, Certified Laboratories Cosmetics, OTC and Supplements Testing

Rasha Abueid is the R&D Supervisor for Certified Laboratories, supporting Cosmetics, OTC, and Dietary Supplement testing. She holds a bachelor's degree in Chemistry and a master's degree in Analytical Chemistry from the University of Jordan. She began her career as an analytical chemist during her university studies and later performed drinking water testing at the Jordanian Water Authority.

Rasha spent over four years at Medisca, specializing in USP monograph testing of pharmaceutical raw materials. In her current role, she manages and coordinates method validation, verification, and method transfer across Certified Laboratories’ Cosmetics, OTC, and Supplement locations. Her expertise includes chromatography, GMP practices, HPLC, GC, FTIR, UV-Vis, and method validation and verification in regulated laboratory environments.

About Certified Group

Certified Group partners with customers to deliver innovative scientific solutions and expertise – So The World Can Trust In What It Consumes™. As a leading provider of laboratory testing, regulatory consulting, and certification & audit services, Certified Group includes Food Safety Net Services (FSNS), FSNS Certification & Audit, Certified Laboratories, EAS Consulting Group, and Labstat International Inc. Certified Group provides analytical testing and regulatory guidance services in the food & beverage, dietary supplements & NHP, cosmetics, OTC, personal care, tobacco, nicotine, cannabis, and hemp industries.