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Antimicrobial Protection in Cosmetics: Preserving your Formulations

Course Summary

This course is designed for formulators. The purpose of the course is to help formulators understand the requirements for their products – from a legal, safety, practical, and market point of view -, the testing involved, how to select the right solution and how to apply it. For formulators that are just starting out, the course introduces them to the topic of product protection. For more seasoned formulators, the course offers an up-to-date review of the current state of the legal environment, commonly used ingredients, and trends. In addition to providing an overview of the field of cosmetic preservation, the course also aims to provide context and a historical review.

Course Outline

  • What is product protection and why is it needed? An explanation of:
    • What happens to cosmetic formulations when preservation is not used 
    • How contamination occurs in a production environment or repeat applications during consumer usage
    • Main microbial contaminants during consumer usag
  • A short history of preservation in food and cosmetics - a historical review of methods of preservation of food and cosmetics, their advantages and shortcomings.
    • Why food preservation is linked to cosmetic preservation
  • What you need to know about Microbiology
    • A brief introduction to microbiology
    • Microorganisms of concern
    • Preservative Efficacy Test
    • Challenge Test Criteria for product protection
  • Regulatory requirements - an overview of how regulatory requirements have evolved, what the current requirements are, and what we can expect for the future.
    • PET Methods
    • Acceptable preservatives for product usage
  • Consumer/retailer expectations and trends. A review of:
    • How consumer perceptions are influenced and have changed
    • Retailer blacklists
    • Non-Government Organization (NGO) lists of acceptable preservatives
    • Natural products
    • Clean Beauty
  • Formulation types and their challenges. A review of:
    • Major formulation types used in cosmetics
    • Why they require different preservation choices
    • Role of preservative regulation (e.g. rinse-off and leave-on) 
  •  Traditional preservatives. A review of:
    • Traditional preservatives used today, chemistries and applications
    • Their history
    • Their regulatory status
  • Product protection enhancer (Preservative enhancers, multifunctionals). A review of preservative enhancers and alternative/non-traditional preservatives.
  • "Preservative-free"/self-preserving formulations. A review of preservative-free formulations 
  • Hurdle Technology. A review and history of the technology.
  • How to formulate for effective product protection. A review of raw ingredient incompatibility, manufacturing temperatures, order of addition, and incorporation into the water phase of the formulation.
  • Resources for formulators. A review of sources of information.


  • $299 - SCC Member
  • $399 - Non-Member
  • $179 – SCC Junior or Student Member

Note: companies registering 5+ SCC members for this course receive $25 off per registration. Companies registering 10+ SCC members for this course receive $50 off per registration. Discounted group registrations need to occur during the same online transaction. If you would like to submit a group registration of 5+ or 10+, or have any other questions about this event, please contact SCC Headquarters Staff.

If also applying for SCC membership, please allow up to five business days for application processing. Member pricing will not be in effect for CEP registrations until after the membership application is approved. 

 View our CEP Course Pricing and Refund Policy.

Instructors: Donald J. English &
Dr. Balint Koroskenyi

Format: SCC Online CEP Course


  • Monday, November 14, 2022 (11:00am - 2:30pm ET)
  • Tuesday, November 15, 2022 (11:00am - 2:30pm ET)

View our CEP Course Pricing and Refund Policy.

In addition to the live instruction, course registrants will also receive a PDF copy of the course slides, as well as access to course replay recordings for 21 days following the live course dates.

Note: a free Zoom account  (Zoom) will be required for viewing course replay recordings after the live dates. This is to ensure accurate attendence reporting for course completion certificates.


About the Instructors

Donald J. English

Donald J. English Microbiological Quality Consulting LLC

Donald J. English graduated summa cum laude from the University of Charleston with a Bachelor of Science degree in Biology and has a Master of Science degree from North Carolina State University at Raleigh in Microbiology with a minor in Biochemistry.
He has over 40 years of experience at the bench and managerial levels in industrial microbiology and has worked in the Research and Development and Quality Control Microbiology Laboratories at Avon Products, Inc., GlaxoSmithKline Consumer Healthcare and Merck and Co.

He is currently a consultant that provides consulting services to cosmetic/personal care, dietary supplement and pharmaceutical industries. Has extensive knowledge in the following areas: how to adequately preserve product formulations by using traditional and non-traditional/alternative preservative systems; cGMP auditing of Quality Control Testing Laboratories (e.g. in-house and contract) and non-sterile manufacturing facilities; hygienic design of manufacturing utility systems (e.g. compressed air and water) and manufacturing equipment; risk assessment; microbial test method development and validation; microbial content testing of raw ingredients and finished product formulations; microbial identification of isolates; implementation of rapid microbiological test methods; root-cause investigations of microbiological contamination issues in product formulations; and cleaning and sanitization practices of a manufacturing facility and equipment.


Dr. Balint Koroskenyi

Symrise Inc.

Dr. Balint Koroskenyi received his Master of Science Degree in Chemistry in Hungary with a minor in teaching and his Ph.D. in Polymer Science from the University of Massachusetts at Lowell. He has held several positions in academia and industry encompassing 22 years of experience. He has worked in Personal Care as a bench chemist, as a technical account manager, and, in his current role, as a product manager for a total of over 7 years. He is currently a Product Manager at Symrise’s Cosmetics Ingredients Division overseeing multifunctional ingredients used for Product Protection. He is a member of the Society of Cosmetic Chemists and the PCPC Micro Committee.

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