Cosmetic expiry date - shelf life - stability testing

[@dlatua]

I'd add that all the tests should be done in the package it is going to be packed.

[@theinstituteofpersonalcare6401]

You can learn this in full detail by studying with us - all online - learn anywhere in the world! Please contact us for course information and which course is going to best suit you: [e-mail]

[@mehboobbadami]

HI IPCS, Thanks for video and reliable info for shelf life. ,,,Is there any tests by which we can prove our product is safe and we can save ourselves .,,,.if someone sues us that this skin reaction is because of our products used by them, although i will be performing preservative challenge and stability tests.... Do people perform dermatological test or clinically tested for this reason....Thank you

[@theinstituteofpersonalcare6401]

Yes there are tests that can be performed but the best test totally depends on the product type, its application, ingredients used (in combination and on their own), the target market for the product to be used on etc - so it needs individual consideration. Please contact us if you'd like more information or help with this: [e-mail]

[@jabbymehvash8113]

Thanks belinda for listening to your subscribers.. I was also one waiting for this video release. Thanks

[@theinstituteofpersonalcare6401]

you're welcome.

[@redbackuk]

Great information as always, thank you. If average climate temperature + 10° reduces testing period to 18 months, does +20° reduce it to 9 months? SO in the UK, could I test at 45° for 9 months to simulate 36 months at 25°? Thanks in advance :)

[@srushtigee6684]

Hi, I'm a bit lost. If we do 1 month of different temperature storage + humidity, and freeze/thaw for 12 days, what else comes under accelerated stability? You said we can do accelerated stability testing and continue it for the shelf life, and that should be enough to go to market. So when does one hit the markets exactly? After the 1 month and 12 days of freeze/thaw, or after the 3 months post that? What happens in the 3 months exactly other than centrifugal test? What if it is an anhydrous product? TIA

[@theinstituteofpersonalcare6401]

Hi Gypsy Cheese Dip, Anhydrous products are those without water - eg powder or oil. You really need a minimum of 3 months accelerated results before making a larger production batch and then wait another 3 months before releasing to the market for a high level of confidence. Remember accelerated testing is never a guarantee. For more detailed discussions or assistance with your specific scenario please try our Study only or full certificate training option: personalcarescience.com.au/CosmeticScience/CertificateinCosmeticQualityandStability-1983/ or purchase consulting time with you so we can talk specifically about your needs: personalcarescience.com.au/Advice/Advice-2046/ Happy Formulating!

[@mavicosbeautypersonalcare5645]

What about humidity as a factor for stability and how do you determine after opening shelf life?

[@theinstituteofpersonalcare6401]

This is a more specialised discussion, please contact us if you would like to learn this properly: [e-mail]

[@gabbychance7851]

What happens if your product fail the test would they give you advice?

[@theinstituteofpersonalcare6401]

Depends on who owns the IP or who is at fault. Here are some videos that may be helpful for you: Who owns the formula: kzbin.info/www/bejne/Y3aWnZV9hamkn9E and Who's responsible for faulty product: kzbin.info/www/bejne/ZoDQqX9shMqejZo If you need more individual guidance please email us after watching these videos: [e-mail] Hope this helps,

[@razazahur]

Thanks Belinda. Great and most useful information is given by you! Bless you!

[@theinstituteofpersonalcare6401]

You're very welcome, glad you enjoyed it.

[@ampfaw]

Just what I was looking for. Thank you!

[@theinstituteofpersonalcare6401]

Glad you enjoyed it!

[@ugochinnamdi9275]

Thank you so much ma. For cosmetic formulators starting from their homes, how can we go about these tests so it can push the products in the market?

[@theinstituteofpersonalcare6401]

Please learn it from us properly - you can do most of these tests at home within a tight budget and purchasing a few pieces of essential equipment. Please contact us to find out how: [e-mail]

[@almaram]

@@theinstituteofpersonalcare6401 can you please send me a list of the equipment we need

[@almaram]

@@theinstituteofpersonalcare6401 [e-mail]

[@mistyfrost9974]

Did you find out??

[@kaybee8287]

I don't know if this is still needed but here it goes. You can get the basic equipment(eg. an incubator and a microbial test kit with slides) to start with, like she said and then you'll need to send it to NAFDAC. They'll do at least 3 months testing for you and send you the results plus a certificate if it passes.

[@MustafaLakdawala-e4r]

How Should I Set My Formulations

[@theinstituteofpersonalcare6401]

You will need training in quality & stability to help you determine the shelf life of your products/formulas. You can enrol into our Certificate in Quality & Stability: personalcarescience.com.au/CosmeticScience/CertificateinCosmeticQualityandStability-1983/

[@wavetoreve8913]

Thank you for the video. May I ask how microbial testing, visual testing and viscosity testing can be done for cream? Also, how is microbial checks conducted for stability tests? Thank you.

[@theinstituteofpersonalcare6401]

This requires very detailed answering, please study this unit with us to get the detailed guidance you are looking for, full details here: personalcarescience.com.au/CosmeticScience/CertificateinCosmeticQualityandStability-1983/ Very cost effective and all on-line - study from where ever you are in the world we're as close to you as your computer!

[@mrs.robinson.1]

Hi Belinda! Thank you for the video. In the freeze/ thaw testing, do you stir or agitate the product in any way between cycles? Or just observe any changes. Example, even a good emulsion would have some water on the surface from the thawing process, right? Is the full stability testing you offer included in the cosmetic chemist degree?

[@theinstituteofpersonalcare6401]

Hi there, We teach about this in our stability unit, you can study this in our Certificate in Advanced Cosmetic Science: personalcarescience.com.au/CosmeticScience/CertificateinAdvancedCosmeticScience-478/ or Diploma of Personal Care Formulation: personalcarescience.com.au/CosmeticScience/DiplomaofPersonalCareFormulation-479/ or our short certificate in quality & stability: personalcarescience.com.au/CosmeticScience/CertificateinCosmeticQualityandStability-1983/

[@newmoonbeginningsthespirit5867]

What do bubbles mean in a cream? I created a sample that showed stability (no separation ) however stored in a glass jar I now see bubbles in the emulsion

[@theinstituteofpersonalcare6401]

Thank you for watching. You can learn this in full detail by studying with us - all online - learn anywhere in the world! Please contact us for course information and which course is going to best suit you: [e-mail]

[@wendyaa6456]

Probably because of exceeding the optimum shear rate during the mixing or the homogenizer not work well

[@bronwyn6704]

Where can stability and challenge testing be done in New Zealand?

[@kaedadoll3526]

Hey! I Have a question, I created a face wash and I used Liquid Germall plus at 0.7 percent but for some reason by product had a weird smell only after a month of sitting, it says the the usage rate for LGP is 0.5 but I apparently needed more, im not sure why it have a smell so soon!!!

[@theinstituteofpersonalcare6401]

Learn how to formulate with active ingredients, including how to stabilise them in your formulas and check quality/stability with our Certificate in Advanced Cosmetic Science: personalcarescience.com.au/CosmeticScience/CertificateinAdvancedCosmeticScience-478/ or Diploma of Personal Care Formulation: personalcarescience.com.au/CosmeticScience/DiplomaofPersonalCareFormulation-479/

[@ioanagabrielagoja7626]

In Pharmaceutical Industry stability testing is conducted per climatic zone depending on where we want to commercialise the medicinal product (Zone I, II etc). By climatic conditions it is understood both, temperature as well as humidity. Is there an exemption for cosmetics that allows us to conduct the stability under termal stress only? Thank you.

[@theinstituteofpersonalcare6401]

Learn how to stabilise cosmetic formulas and check quality/stability with our Certificate in Advanced Cosmetic Science: personalcarescience.com.au/CosmeticScience/CertificateinAdvancedCosmeticScience-478/ or Diploma of Personal Care Formulation: personalcarescience.com.au/CosmeticScience/DiplomaofPersonalCareFormulation-479/

[@Ccsmable]

Thank you for the video. Very educational!

[@theinstituteofpersonalcare6401]

Glad it was helpful!

[@asmayengui4746]

Thank you very much for your video, it is very helpful for me

[@javadtadayon8982]

May help me

[@theinstituteofpersonalcare6401]

Thank you.

[@indusingh0886]

Hi, microbial challenge test is easy as it sounds. Coz I have done multiple tests. What puzzles me is elevated temprature. Do labs keep beakers and conical flask to check 40°c and 55°C temp stability or glass vials with tin or aluminium cap of cosmetic product?? To check primary packaging stability especially PP bottle are also kept with product under elevated temperature or just light, uv, humidity, of primary packaging is tested??

[@theinstituteofpersonalcare6401]

Please don’t conduct your own challenge testing/preservative efficacy testing (PET) - it should only be done by professional labs with the right equipment and facilities. You can conduct your own microbial testing, but that is not the same as challenge testing/preservative efficacy testing (PET). You should be conducting your microbial and stability testing using the same packaging as you will be selling the product in, so that you can test how it will perform using that packaging, not beakers or flasks. Please learn this properly with our Certificate in Cosmetic Quality and Stability: personalcarescience.com.au/CosmeticScience/CertificateinCosmeticQualityandStability-1983/ or become a Qualified Cosmetic Chemist with our Diploma of Personal Care Formulation: personalcarescience.com.au/CosmeticScience/DiplomaofPersonalCareFormulation-479/

[@amenrx1]

Does the EU mandate a 3 year expiration date?? What if you give your product a 2 year shelf life after testing;is that acceptable??

[@theinstituteofpersonalcare6401]

Please learn full EU regulations properly with our EU Cosmetic Compliance workshops: personalcarescience.com.au/Regulatory/EUCosmeticComplianceWorkshops-483/

[@PleasingPapaGod8]

Hello! Thanks for your video , I would like to get my invention tested, can you give me guidance?

[@theinstituteofpersonalcare6401]

I'm sorry we don't provide that testing, try your local manufacturer or learn how to conduct the testing for yourself with our Certificate in Cosmetic Quality & Stability: personalcarescience.com.au/CosmeticScience/CertificateinCosmeticQualityandStability-1983/

[@yakata79]

Very helpful thank you

[@theinstituteofpersonalcare6401]

You're welcome! Please email us for full formulation, method and supplier details: [e-mail] we provide this free. Happy formulating!

[@norhaziyahmahamood4352]

Hai, can the stability test conducted in oven rather tahn in incubator?

[@theinstituteofpersonalcare6401]

No, you need to maintain it at the low temperatures stated for a set period of time, which is not realistic for an oven.

[@javadtadayon8982]

Theings for your vidoes

[@theinstituteofpersonalcare6401]

Thank you - happy formulating!

[@QueenLatifa-dn1sf]

Thanks very much sweetheart

[@AfResearch-vo9ls]

May I know what is the different between cycle stability and freeze/thaw stability?

[@theinstituteofpersonalcare6401]

Learn how to formulate with active ingredients, including how to stabilise them in your formulas and check quality/stability with our Certificate in Advanced Cosmetic Science: personalcarescience.com.au/CosmeticScience/CertificateinAdvancedCosmeticScience-478/ or Diploma of Personal Care Formulation: personalcarescience.com.au/CosmeticScience/DiplomaofPersonalCareFormulation-479/

[@javadtadayon8982]

Thank your vidoes

[@theinstituteofpersonalcare6401]

Thank you - happy formulating!

[@drnaidja9877]

Mam i'd like to know if the incubator is microbial incubator or a climatic chamber? so u remain control of both temperature & humidity?

[@theinstituteofpersonalcare6401]

It is a climatic chamber - you can get them with humidity controls as well but for cosmetic testing purposes, the temperature is the most important. Humidity is important when testing pharmaceutical/drug substances or for checking permeation of packaging. Happy Formulating!

[@inityo]

12 months shelf life is fine

[@elianamckee]

How do you find out if actives are still bioavailable at the end of the 2-3 years ?

[@theinstituteofpersonalcare6401]

There are several ways: check overall quality/stability of the formulation using regular cosmetic stability parameters; assay for the active if you are able; run performance evaluations. Learn how to check quality/stability with our Certificate in Cosmetic Quality & Stability: personalcarescience.com.au/CosmeticScience/CertificateinCosmeticQualityandStability-1983/ or run performance evaluations, along with quality and stability - taught in our Certificate in Cosmetic Regulatory Essentials: personalcarescience.com.au/Regulatory/CertificateinCosmeticRegulatoryEssentials-374/

[@jiminbae3589]

If you have a certificate in stability testen, can you do it on your own at home?

[@theinstituteofpersonalcare6401]

Yes you can - you need to outsource PET but the rest of the tests, including standard micro counts, you can conduct in a clean lab area (even if that is in your home).

[@KhalidBenKhaleque]

is it necessary to do when we are going to change the packaging, not material change just shape change

[@theinstituteofpersonalcare6401]

To provide you with specific advice we do need to review your exact situation and allocate time to do so, please purchase consulting time here: personalcarescience.com.au/Advice/cosmeticformulation,brandadvice-797/ And we’ll be in touch to discuss the next steps. Happy formulating!

[@priyankapandit5715]

Will I get pdf or document of this video please?

[@theinstituteofpersonalcare6401]

We’re happy to provide the full formula, ingredient, supplier, input and method details, please email us: [e-mail] and we can send you a link to access ALL our free formulas and reports. Happy formulating!

[@moammedabdallah7543]

👏🏻👏🏻👏🏻💜

[@theinstituteofpersonalcare6401]

Happy formulating!

[@kerriefearby9542]

Fantastic video

[@theinstituteofpersonalcare6401]

Thank you - happy formulating!

[@flowerpot7347]

Do you have a lab where you do these tests for people?

[@theinstituteofpersonalcare6401]

Yes we do please email us for more information: [e-mail]

[@aungzawmoe7079]

Hi, I'm from Myanmar. I want to study and how can I learn

[@theinstituteofpersonalcare6401]

You can learn by studying with us - all online - learn anywhere in the world! Please contact us for course information and which course is going to best suit you: [e-mail]

[@deborahthomas3031]

I really want to learn just that I can't afford the money I'm from Nigeria I wish to learn from you someday😢😢

[@alitaritchie7838]

Thank you for the video, it was very informative. I’m interested on how to run stability testing on make up. I haven’t tried but I imagine the strong pigmentation will make it difficult to view microbial tests and check ph levels (using strips). Would that be the case?

[@theinstituteofpersonalcare6401]

You only need to test pH where water is involved - yes, strips can be hard to read. Invest in a good (but cost effective) pH meter, watch this video for our equipment recommendations: kzbin.info/www/bejne/j5uagmONiddljpo Microbial testing is not hard to see results - you definitely know if micro-organisms grow or not! Hope this helps happy formulating!

[@jaswindersingh-iz4bq]

Great 👍

[@theinstituteofpersonalcare6401]

Thanks for watching! Please contact us for the full formula, method and supplier details - FREE! [e-mail] Happy formulating!

[@bonnievisax3272]

Can you add subtitle? Thank you

[@theinstituteofpersonalcare6401]

No I'm sorry they are not scripted

[@holistichair_nz]

Great overview

[@theinstituteofpersonalcare6401]

Thank you for watching!