Rare causes of abnormal urine odor include: Phenylketonuria. Phenylketonuria is an incurable genetic disease that is present at birth. The disease makes you unable to break down an amino acid called phenylalanine. Other symptoms include: 1  decreased skin pigmentation.
Olive Oil. Olive oil is also good for your eyebrows. Being rich in vitamin E, olive oil can help your eyebrow hair grow faster and thicker. It will also help keep it dark-hued. 1  Massage your eyebrows with warm olive oil for 5 minutes before going to bed. 2  Leave it on overnight, then rinse it off with warm water the next morning.
Eyebrows will usually grow at the rate of 0.16mm every day, 3 times faster than your head hair. However, growth period varies based on the health and age group of any particular individual. For example, in mature adults, eyebrows take 56 to 73 days to grow back and for a child, it takes 58 to 65 days to grow back.