Table of Contents Introduction Understanding Active Ingredients The "Don't Mix" List: Combinations to Avoid Smart Combinations That Work Expert Opinion: The Role of pH and Formulation Q&A with a Dermatologist Conclusion 1. Introduction In the world of skincare, more isn't always better. The trend of layering multiple serums and creams can be great for targeting different concerns, but combining the wrong skincare ingredients can lead to redness, irritation , and even a damaged skin barrier. It’s like mixing chemicals in a lab—the results can be unpredictable. To save your skin and your money, it's essential to understand which ingredient combinations to avoid and which ones work together in harmony. 2. Understanding Active Ingredients The ingredients you need to be most mindful of are the "actives." These are powerful compounds designed to change...