Essential oils are rich in natural benefits, but they can be dangerous if used incorrectly. Before you start using it, make sure that you pay special attention to the areas.
1. It cannot be applied directly to the skin, but must be mixed with vegetable oil.
Essential oil is a safe substance, but because it concentrates the ingredients of plants, it may cause excessive irritation when applied directly to the skin. For massage, blend vegetable oil, and for handmade cosmetics, mix basic ingredients. If contact occurs, wash immediately with plenty of running water.
- Here will introduce the dilution method of massage essential oil concentration:
1) The diluted concentration is 2% for the body and 1% for the face
Essential oils concentrate plant components and cannot be applied directly to the skin. When used in massage, they need to be diluted with base oil. The action of diluting is called dilution in aromatherapy. Base oil containing () % essential oil is called diluted concentration. One drop of essential oil is 0.05 ml. The dilution concentration of essential oil used for massage is 1% of the face, 2% of the body base oil and the number of drops of essential oil, as recorded below:
A simple calculation method of drops
[Example 1] 20 ml of base oil, mixed with 20 drops of essential oil, diluted at 5%. If you want to dilute it to 1%, 20 ÷ 5 is 4 drops. You want a 2% dilution, you double it and add 8 drops.
[Example 2] 10 ml of base oil, mixed with 10 drops of essential oil, diluted at 5%. If you want to dilute it to 1%, 10 ÷ 5 is 2 drops. You want a 2% dilution, you double it and add 4 drops.
2) When making small amounts of massage oils
For example, if you want to make 10 ml of essential oil for body massage, the number of drops of essential oil is 4 drops (see above calculation method). If you want to use four essential oils, you can only add one drop each, and you cannot adjust the combination of essential oils. In this case, can mix the necessary the number of drops then place the blend essential oil in a shading bottle with the dripper.
2. 
Never drink it. Never drink it by mistake.
There are also overseas experts to guide the method of internal use, this method of use can only be implemented by experts with professional knowledge and experience, please do not carry out by yourself. In case of accidental drinking or residual essential oil in the mouth, please gargle with plenty of water, and immediately accept the doctor's examination. When visiting a doctor, please carry a bottle of essential oil that you have drunk by mistake.
3. 
Do not go in the eye.
Do not allow essential oil to contact the eyes. In case of accidental contact with the eyes, do not rub, please wash with plenty of water, and immediately accept a doctor's examination.
4. 
Pay attention to fire source when using.
Essential oils may cause fires. Do not go near the fire. Be careful when using essential oils in kitchens close to fire sources.
5. Attention must be paid to the use of the following conditions.
<Advanced age · Past medical history> Physical decline, physical sensitivity, easy to respond to essential oil. It is recommended to start with about half of the drops described in this book.
<Children> Compared with adults, children are light in weight and weak in physical strength, so please do not use essential oils for children under three years old except for incense. For children over 3 years of age, start with 1/10 of the weight described in this book and do not exceed 1/2 of the drops.
<Pregnant women> Pregnant period is easy to become sensitive to sweet atmosphere, cause body condition change period. Please note that there are also essential oils that are not suitable for pregnant women (Like Happy Sage, Cypress, Moroccan Jasmine, Juniper, Marjoram, Peppermint, Myrrh, Rosemary etc.). However, aromatherapy is very effective for the physical and mental care of pregnant women. It is recommended to consult with a trusted aromatherapist before conditioning. If you feel uncomfortable to the fragrance, or abnormal changes in physical condition, please stop using immediately.
6. 
Get a skin allergy test.
Please take skin allergy measures after using massage essential oils and before using handmade cosmetics. Apply an essential oil to the inner forearm for about 24 to 48 hours and observe how your body reacts. If abnormal skin occurs, rinse immediately with plenty of water and discontinue use.
Optimum Storage of Essential Oils
Use correct method to keep essential oil, just can enjoy natural beauty sweet atmosphere for a long time, also can ensure the quality of essential oil.
1. Fasten the bottle cap
Essential oils are very sensitive and exposure to air will accelerate changes in composition. After use, fasten the cap immediately to ensure quality.
2. Store in a cool place and store in the fridge during the summer
Not only air exposure, but also high temperature, moisture, and ultraviolet light can accelerate the composition of essential oils. Please keep away from direct sunlight, damp bathroom and kitchen near fire source. Keep in cool place. In case of heat wave, it should be kept in the refrigerator.
3. Keep out of the reach of children and pets for safety
Keep the essential oil out of the reach of children and pets in order to prevent children from drinking it and pets from breaking the bottle.
4. Confirm the expiry date on the package
Please observe the expiry date on the essential oil package. Generally, the essential oils should be used within one year after opening. Citrus essential oils have rapid changes in composition compared with other essential oils, so please use them as soon as possible. Even if the use period has not expired, if you feel a change, it is likely that the essential oil has deteriorated, please stop using.
In aromatherapy store, can buy the special box that keeps essential oil and small bag to wait normally, can be good at using. There are also some aromatherapists who practice aromatherapy, using wine casings to store essential oils or vegetable oils.