1. For beginners, don't mix a lot of massage oil at a time, such as facial oil. You can mix 5ml or 10ml at a time, and mix it again after use. Considering the taste of blended oil, if you don't like it, you can change the formula next time. If you mix 100ml at a time, it is not easy to save at first. Secondly, if you don't like the smell, you will have a headache about how to use it. 2. Adjust a small amount of massage oil at a time, and it is best to use it up as soon as possible. Some aromatherapy experts will recommend using it up within six months. In fact, often opening the bottle cap will accelerate the oxidation of massage oil. Some base oils (such as grape seed oil) have a short shelf life and are prone to oxidation and deterioration. I suggest you use them as soon as possible. 3, try to reduce the opening of massage oil, massage oil every time, the sooner the better! Wipe off the residual massage oil at the bottle mouth with facial tissue and cotton pad. This is also done to extend the shelf life of essential oils. It is best to have a skin test for sensitive skin before using massage oil. If citrus essential oils such as sweet orange, lemon and bergamot are added to the massage oil, it is best to use them at night to avoid photosensitive reaction. 5. When blending oil, first add base oil, then drop it into pure essential oils and shake well. It is best to use it again the next day, so that the essential oil and the base oil can be fully mixed. Never add new massage oil until it is used up, even if it is the same formula. Wash the bottle after use, dry it and adjust the oil next time. 6. The prepared aromatic massage oil needs to be well kept and protected from light like pure essential oils. It's best to stick the label with a small sticker. This bottle of massage oil has a good name such as "Detoxification Beauty Massage Oil" and "Slimming Massage Oil", which is convenient to distinguish it from other massage oils in the future.