Sinus Ease is a must have roller for anyone who struggles during season changes and other weather variations. This roller is made with our proprietary blend of peppermint, lavender, lemon and eucalyptus. We blend those into fractionated coconut oil and fill our beautiful cobalt blue roller bottles. All of our roller tops are stainless steel. We prefer them over plastic due to plastic breaking down eventually and the effect some citrus oils have on plastic. The stainless steel roller ensures a smooth coverage. I personally use this for both allergy and sinus issues. I use the oils in my diffuser on days when I am struggling, also.