The Universal Selection Source: Cosmetics Ingredients

Online Course

Testing Stability of Your Cosmetic Formulations

This is a Past Course

Recorded on Feb 1, 2017

Rapidly discard formulations with stability issues by better organizing and combining your tests (stress testing, micro testing, accelerated / long-term testing…).


Eric Abrutyn will discuss how to achieve reliable results (what test, in which conditions…) & how to assess the impact of external factors (packaging, transport…) on end-product stability.

Read the full Course Outline

Eric Abrutyn Presented By:
Eric Abrutyn

Length: 90 min

Course Type: Formulation
Level: Beginner

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.wmv Courses Recording, Presentation Slides & Transcript of Q&A session

Why should you view this course?

Regulation requires that any cosmetic product has guaranteed stability & integrity until shelf-life. It takes lots of time to run stability tests, and we all want to avoid as much as possible stability issues in the final development steps… which would imply to start everything all over again! That’s exactly why we are offering this course, because (too) many formulators still run stability tests by habit and there is a better way! Join & learn to:


1. Define reliable & efficient test plan to best combine predictive tests (accelerated / long-term testing, micro testing...) depending on your formulation (highly viscous...)

2. Better assess shelf-life of your product by reviewing how to play with parameters that can affect or accelerate stability (light, temperature, moisture, agitation…)

3. Minimize the occurrence of “unfortunate surprise” by understanding the effects of test equipment and packaging (interaction with container material and label...)

Testing stability in Waterbased Emulsions

Who should view this course?

Cosmetic Formulators, technicians, R&D people and Process developers

Course Outline

  1. Defining and understanding stability
    • Definition
    • Regulatory guidelines
    • Types of stability (preliminary, initial, pilot plant, plant trial)
    • Parameters affecting stability

  2. Predictive tests
    • Types of stability tests (accelerated/long term, stress studies...) and how to combine them
    • Test conditions
    • How to choose the right test for your formulation (solid, semisolid, liquid): you shouldn't do it by habit!
    • Interpretation of the results

  3. Testing equipment and facilities

  4. Packaging considerations (interaction...)

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