Hi, I’m Charles Barber. Before I founded Crucial Four, I struggled with constant fatigue, brain fog, and a weakened immune system. I eventually discovered that refined salt—stripped of essential minerals—was quietly causing these issues.
That's why I created mSalt: a pure, mineral-rich sea salt harvested sustainably from pristine Icelandic waters. It made a huge difference in my life, improving my energy, clarity, and overall health.
At Crucial FOUR, if we can’t grow something ourselves, we source from trusted partners—real salt-of-the-earth people who share our values for purity, quality, and sustainability.
Charles Barber
Founder and Formulator
Crucial FOUR