The scientific team behind HerbiGold CBD oil use a unique technology called supercritical CO2 extraction (a type of SFE – supercritical fluid extraction) it is an innovative technology referred to as “green chemistry”, and uses extraction methods without the use of any potentially harmful chemicals. The unique parameters of the supercritical state make it possible to extract the desired ingredients only, without risking contaminating the extractant. This quality is crucial as hemp is known to easily accumulate from the soil heavy metals and other harmful compounds. Unlike other, simpler techniques supercritical CO2 extraction guarantees that the final product is top-quality full spectrum golden CBD oil rich in the neutral forms of cannabinoids (eg CBD, CBC, CBG). Pure and safe.