
Image by Екатерина Клищевник at Adobe Stock
We noted last week that as most readers know, there are any number of reasons why cosmetic ingredients may interact within a formula; from differences in optimum pH and solubilities, to variable polarity, charge, electrolytes, etc.
This made us wonder: What is your biggest challenge in testing for cosmetic ingredient actions? Here's what you said. Be sure to check back for our latest poll!
Poll Results
- Predicting long-term interactions 66%
- Unstable or volatile ingredients 19%
- Impact of pH on formulation 15%