Water-Based vs Oil-Based Red Light Therapy Serum: Which One Should You Choose? The primary question this article answers “Should I use a water-based or oil-based red light therapy serum — and which one is better for my LED routine?” Here is the clear answer: Water-based serums are best for LED light penetration and leave-on routines, … Continue reading Water-Based vs Oil-Based Red Light Therapy Serum: Which One Should You Choose?