100% pure, without additives or fillers. Suitable for use with vaporizers, diffusers, humidifiers, candle burners, and air purifiers. Packaged in a presentation box, they also make a perfect gift. Peppermint, tea tree, lavender-lemon, and eucalyptus. Each essential oil comes in an amber bottle to keep the oils fresh and prevent light degradation. Essential oils can be mixed or used in the bath, steam room, and sauna.