The CSTA Blog
News, insights and practical advice on cosmetic stability testing, preservatives, shelf life and ACCC compliance — written for Australian cosmetic brands and formulators.
How Many Samples Do You Need for Cosmetic Stability Testing?
Work out your sample quantities, choose the right packaging and prepare your paperwork before sending products to the lab.
Read article5 Signs Your Cosmetic Product Might Fail Stability Testing
Before you send a product to market, learn the five most common ways cosmetic formulas fail over time — and how stability testing catches them early.
Read articleWhat Is Cosmetic Stability Testing? A Complete Guide
Everything a formulator needs to know about stability testing — what it is, why it matters, and how it protects your product and your business.
Read articleHow Much Does Cosmetic Stability Testing Cost in Australia?
A clear look at what stability testing costs in Australia, what drives the price, and what you should expect to be included.
Read articleSelling Cosmetics in Australia: ACCC Compliance Explained
A simple overview of the rules that apply when you sell cosmetics in Australia — and where stability testing fits in.
Read articleHow Long Does Cosmetic Stability Testing Take?
Planning a launch? Here is how long stability testing takes and how to work it into your timeline.
Read articlePreservative Efficacy Testing Explained (Challenge Test)
What a challenge test is, which products need one, and why your preservative must be tested in the real, finished formula.
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