BIOCOS Academy Essential Oil Blend GAIVA is a well-being and morning energy cartridge that you can evaporate in the diffusers instead of coffee! Toning, purifying air, providing energy and freshness. Use this mixture for the cold season, because the oils of fir and eucalyptus help cleaning the indoor air against virus spread. Also recommended for using in the sauna.* Important! Pure blends of essential oils are not used on the skin. Mixtures must be diluted with base oils.