Using this pure castor oil is easy. Just take a brush swab and get the right amount of the oil. Then, apply it back and forth on your eyelashes, eyebrows, or hair to let it be absorbed. Remember, since different monitors can show colors differently, the actual color of the oil might not be exactly the same as in the picture. Also, because of manual measurement, there could be a 1 - 3 cm difference in size. If you face any issues with the product, don't give a bad rating right away. Leave us a message so we can help. There's no special maintenance needed for this oil. Just keep it in a cool, dry place and it'll stay good for use.