Beard Bros Pharms – Full Spectrum Cannabis Oil Simple, pure, and full-spectrum. Beard Bros Pharms makes its Full Spectrum Cannabis Oil (RSO) with just one plant-based ingredient: cannabinoid-rich cannabis oil. A rapid cold extraction keeps the natural terpenes intact. It comes in an easy-to-dose syringe, so you can take it on its own, add it to food, or mix it into your routine. It’s clean, potent, and made the old-school way.