I love this product! This lemon oil is amazing. The smell is uplifting so it relaxes me and makes me feel happy. I think this is food grade lemon oil so you can use it in lemonade and for cooking, but I have only used it in my hair (with coconut oil as a carrier). I just got into aromatherapy to relax myself because I didn't want to take meds. I bought an amber vial with a dropper cap and dumped this into it. It makes it easier for using since only a drop or two is needed for the effect. I think this 4 ounce bottle should last me a while. What I also love is that it is bottled in a glass bottle versus a plastic bottle. I don't know about you, but I prefer glass over plastic containers because of the chemicals in plastic. I will continue to buy this product!!