Certificate in Cosmetic Stability Testing

  • Suitable for: Formulators with experience
  • Pre-requisites: Checklist

  • Time: 20 study hours

  • Course Modules: 4

  • Coursework: Self-study + tutor graded

  • Duration: One year deadline

  • Cost: £210 (British Pounds)
  • Next enrolment period: 21-28 Jan 2020

Enrolment opens in:


Formula Botanica Botanical Table of Elements

Our Certificate in Cosmetic Stability Testing will teach you how to design appropriate stability tests for your cosmetics range. In this course you’ll learn how to choose the right stability testing for your cosmetics and make sure that your products are remain safe and stable for their shelf life.

This course is suitable for people with existing cosmetic brands or students with formulation experience. This Certificate will teach you how to make your cosmetics range safe, stable and sellable.

Learn how to perform Cosmetic Stability Tests

Learn the difference between physical, chemical, mechanical, microbiological and functional stability tests. You don’t need to equip your lab with expensive testing kit in order to undertake a sensible stability test. Discover which tests you can easily and inexpensively perform in your artisan cosmetics lab in order to ensure that your products are stable and sellable.

Accurately Predict your Cosmetic Shelf Life

Do you know how long your cosmetic product will last? Many artisan formulators have an approximate idea, but few can state with confidence what the shelf life of their products will be. Take the guesswork out of your calculations by actually understanding how to design a stability study and predict an accurate shelf life for your products.

Create a Regular Cosmetic Stability Testing Schedule

When you formulate cosmetic products, you need to implement a testing schedule to regularly check the stability of your products. Whether you create your products fresh to order, or create batches in advance, learn how to prepare a regular testing schedule to ensure that you know what to look for in changes in your products. Cover all the environmental factors that could cause changes and choose the best tests to monitor these changes.


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This course is for you if:

You are worried that your formulations might not be stable for their shelf life

You want to embed stability testing into the heart of your business

You’re not sure how to design a stability testing schedule for your artisan lab

You want to sell your formulations to the public with a clear conscience

You want to feel confident that your cosmetic formulation will be stable

You want to enrol with an accredited and gold award-winning education provider

“I have just completed my Stability Certificate at Formula Botanica. And I just have to say: Yet again you did Formula Botanica! Stability testing can at time feel overwhelming and difficult, but you have made it less difficult and at least manageable for this artisan formulator. You have helped me understand things I didn’t even now I needed to know.”

– Carola, Sweden

Course Videos

Learn directly from the Formula Botanica team with our professional videos and course lectures

Fun Online Games

Play games to help you learn how to reinforce the learning outcomes for your course

Study Books

Download your beautifully designed course notes to refer back to and keep forever

Tutor Support

Speak directly to a tutor in our private “Ask the Tutor” forum for students

Sequential Learning

Unlock new modules as you work through the course sequentially to enforce learning points.

Course assessments

Test what you learned to help you make your formulations safe, stable and sellable
Formula Botanica Team


Formula Botanica Botanical Table of Elements

Module 1 – Why test for stability?

Many artisan cosmetic formulators don’t regularly test the stability of their products. You’ll learn why stability testing is critical to the success of your business, we’ll look at the damage that could potentially be done to your reputation if you sold unstable products and we’ll review the legal requirements for stability.

CCST Module 1


CCST Module 1

Unit Title

Why Test for Stability?

Unit Content

Learn what it means to have a stable cosmetic product – avoid the nightmare of precipitated pigments, suspended particles, separated emulsions in 2 or 3 phases, discolouration or changed viscosity.

Change your business ethos by embedding stability into the core of everything you do – we’ll teach you how.

When is cosmetic stability testing a legal requirement? We’ll run you through the scenarios you must consider to keep your products safe and legal.

Run through the 9 main reasons that you need to test for cosmetic stability in your products.

Module 2 – Setting up your Lab

Mainstream cosmetics laboratories contain tens of thousands of dollars worth of testing equipment. As an artisan formulator, you need to rely on simpler equipment which is still effective. Run through the main requirements for your artisan cosmetics lab, so that you can still run a comprehensive regular testing schedule.

CCST Module 2


CCST Module 2

Unit Title

Setting up your Lab

Unit Content

Make sure you have the 12 most important pieces of (affordable) equipment for your artisan cosmetics lab. We’ll teach you what they are, how they work and how to use them.

Learn how to use a pH meter – how to create solutions, how to calibrate your pH meter, how to store it and more.

Understand how to set up your artisan cosmetics lab so that you are ready to undertake your stability testing schedule for your own products.

Module 3 – Choosing the Right Stability Test

Depending on the product you’re formulating, as well as its ingredients, packaging and overall efficacy, you will need to determine which stability test is most suitable. We’ll run through the huge variety of tests available to you and help you learn how to conduct them confidently and properly.

CCST Module 3


CCST Module 3

Unit Title

Choosing the Right Stability Test

Unit Content

Learn the 20 different types of stability test available to you as an artisan cosmetics formulator. Learn why, when and how to undertake them, as well as understanding when you can perform these tests yourself or when you need to outsource them.

Receive sample testing schedules, which you can modify for your own products and your own stability testing regime.

Understand which of these tests are mandatory and which are good practice.

Module 4 – Determining Shelf Life

The two most important objectives of running stability tests are (1) ensuring that the product is stable and (2) determining the shelf life of your product. In this module we will show you how to use your stability test results to set a sensible shelf life for your product and ensure that it remains stable for this duration.

CCST Module 4


CCST Module 4

Unit Title

Determining Shelf Life

Unit Content

Learn how to intrapolate the results of your stability tests and measurements in order to calculate your product’s shelf life.

Cover how to plan your batch sizes and packaging, as well as how to label your products correctly to display their shelf life.

Study the differences in global temperatures and relative humidity and how this affects your products and their stability.

“I would absolutely recommend this course to anyone who is formulating their own skin care products. The course not only explains the importance and necessity of stability testing, it also shows you how to perform inexpensive stability testing in your own lab allowing you to perfect your products before you send them to a professional lab for final testing (which will save you a lot of $$$).”

– Patty Palumbo, USA

Certificate in Cosmetic Stability Testing


When you study with Formula Botanica, you become part of a close-knit international community of students and graduates all around the world. We support you all throughout your studies and beyond, and we give you access to our expert botanical skincare science and business files while you are enrolled on your courses.

Bonus 1 – Network with your Peers

Once you enrol with us, you are welcomed into our international student community groups which contain many hundreds of our students and graduates from all over the world. Everyone knows each other and many of our students meet up in their respective countries to share information and formulate together.

In our groups you will receive expert tutor support and peer support. Ask questions, share photos, troubleshoot formulations. Celebrate your victories and get encouragement when you need it. You are never alone.

Bonus 2 – Access our Student Library

When you become a student with Formula Botanica, you also gain exclusive access to our Student Resources Library for the duration of your course. Access our:

  • Preferred supplier guide which contains hundreds of global companies
  • Extensive ingredients directory with listings of over 100 natural ingredients
  • Formulation percentage-to-weight calculator
  • Collection of many hours of expert webinars
  • Scientific research collection
  • Recommended reading list
Formula Botanica Student Library

Bonus 3 – Ongoing Support After Graduation

The support doesn’t finish when you graduate. We want to keep in touch with you once you’ve finished your course and support your career in organic skincare. We offer lots of free promotion for our graduates because we want to help give your business the support it needs when you launch it or as you grow it.

Be featured widely on our website, on social media and on our mailing list. Formula Botanica has many thousands of followers and subscribers all around the world so this will help you create a splash when you launch.

Bonus 4 – Earn Formula Botanica Open Badges

Formula Botanica issues Open Badges to students who pass their courses successfully. These badges can be used on your resume, social media pages and LinkedIn profile to demonstrate that you are a skilled organic cosmetic formulator.

Formula Botanica Badges

Enrol for our Certificate in Cosmetic Stability Testing to learn one of the most important formulation skills – ensuring your products stay safe, stable and sellable.


Suitable for students with formulation experience, ideally graduates of our foundation Diploma.

Online Classroom

Peer support & tutor support via a private Facebook group.

Start Date

Term times. Self-paced training where you have up to 12 months to complete your course.


Formula Botanica is accredited by the Open & Distance Learning Quality Council.


Projects, activities and reflexive learning. The main module ends with a short test.

Expert Support

Our Tutor Team has an educational background in cosmetic chemistry, biology, education and business management. Let us support you.


Formula Botanica Botanical Table of Elements

Formula Botanica operates a term time system, so we can get all of our students started at the same time and run online study groups.

Term times run in the following months:

  • Winter Term: January
  • Summer Term: July

Enrolment for all of our courses will be open during this period. If you want to be the first to hear when we open enrolment, make sure you pre-register for this course.

We offer a 30 Day Money Back Guarantee.

Like this course? You might also like:

Advanced Diploma in Organic Skincare Science
International Organic Skincare Entrepreneur Programme
Certificate in Natural Cosmetic Preservation


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