The mixture of coconut oil and lemon peel is another known remedy that is helpful in growth and nourishment of eyebrows. Take a glass vessel and add ? cup of coconut oil and sliced peels of 1 lemon. Let the solution stay for at least fortnight in a cool and dry place.Once the solution is ready, use cotton ball to apply it every night before bedtime and wash your face the next morning. This is indeed one of the most safest and effective solution for the growth of eyebrows; however, try to minimize your contact with intense sun to avoid irritation.