Stability Test

Stability Test
£59.00

Availability: In stock

The purpose of a stability test is to assess the chemical, microbiological, physical stability of a product. The test assesses whether the quality, functionality and aesthetics when stored under appropriate conditions are maintained to a level that should be expected of the product.

The testing data will determine the expiry date for your products. Stability information is a requirement of the Cosmetic Product Safety Report (CPSR).

Only £39 for Naturallythinking Professionals,find out more...

Full Stability Testing Details

Full details on our Stability Testing service can be found below the form. Click here

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The name of the product

Characters left: 255

The INCI is the list of ingredients in your product, separated by commas.

Characters left: 1000

An interim certificate is useful if your want to get your CPSR produced before waiting for the complete testing to finish. At 8 weeks your CPSR will give you a 1 year shelf life. At 12 weeks, a 2 year shelf life.

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Cosmetic Product Stability Testing

The Purpose of a Stability Test

The purpose of a stability test is to assess the chemical, microbiological, physical stability of a product. The test assesses whether the quality, functionality and aesthetics when stored under appropriate conditions are maintained to a level that should be expected of the product.

The testing data will determine the expiry date that your products have.. This is the date you will place on your products packaging and it is the date that will be used in your Cosmetic Product Safety Report (CPSR).

The testing Procedure

We take your 100ml bulk sample and divide it into inert glass jars for testing. These will form the control. We test your control at three different temperatures 4c, 25c and 45c. Seperately we test 2 supplied samples of your product in the final packaging, one at 25c and one at 45c.

Passing the Stability Test

As part of your stability test, we will evaluate scientifically the shelf life of your product. The stability test data, will be the data that is used in your Cosmetic Product Safety Report (CPSR) as the recommended shelf life and the expiry date / period after opening that goes on your packaging.

The Parameters we measure

Throughout the testing time, we measure the:

pH

Viscosity

Appearance

Odour

Product Weight Lost

Continual evaluation of the product allows us to measure these variables and the effect of time, temperature and packaging on your product.

What you Need to Supply for the test

Bulk Product

100ml of Product

We require 100ml of your product supplied in any packaging of your choice. We will place this sample into glass when it arrives with us to form your control.

2 x Packaged Products

We require you to send us 2 of your products in the finished packaging that they will be retailed. This includes the closure.

It is important this is your final packaging as the stability results will be based upon the interaction of your product with this testing and you will need to re-test if you want to change your container at a later date.

Ingredients And Composition

Full INCI listing

Please provide us with the INCI (full listing of ingredients) (i.e. Aqua, Prunus dulcis, Sodium benzoate, Citric acid), the name of the preservative you are using (i.e. Phenoxyethanol) and the pH of the product (i.e. 5.1).

If you need any help understanding Preservatives, then why not visit us on one of our courses (click here)

Postal Address

Naturallythinking

Luciano Molinaro
Toxicology & Regulatory
The Tramsheds, Coomber Way
Croydon, Surrey, CR0 4TQ

Please ensure your order number is included in the package.

How Long Does Stability Testing Take?

Testing Start Date

We aim to start your test as soon as possible and will start within 14 working days of receiving the 100ml and 2 final packaged products. We test your product for 16 weeks (unless your product fails before). How long your product lasts during testing will determine the expiry date of your product.

1 Year Expiry Date

If you would like a 1 Year expiry date i.e. the product should be used within 12 months of manufacture, this will take 8 weeks of testing.

2 Year Expiry Date

If you would like a 2 Year expiry date i.e. the product should be used within 24 months of manufacture, this will take 12 weeks of testing.

3 Year Expiry Date / PAO

If you would like to give your products a 3 year expiry date or use the Period After Opening (PAO) symbol (see below), then you will need 16 weeks of testing.

Additional Information

Additional Information

Short Description

The purpose of a stability test is to assess the chemical, microbiological, physical stability of a product. The test assesses whether the quality, functionality and aesthetics when stored under appropriate conditions are maintained to a level that should be expected of the product.

The testing data will determine the expiry date for your products. Stability information is a requirement of the Cosmetic Product Safety Report (CPSR).

Only £39 for Naturallythinking Professionals,find out more...

Full Stability Testing Details

Full details on our Stability Testing service can be found below the form. Click here

Need Help Completing this Information?

SKU 5060330637760
Skin Type Normal Skin
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Ingredients, Technical & MSDS 

Click here for Ingredients and MSDS Data


Generate the certificate of analysis for your purchased product by entering your Batch Number which can be found on the packaging of your product.

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