This was a part of our packaging design course where we had to redesign the packaging of an existing product. I chose Dhara Oil as I found that the Dhara Oil bottles does not provide a way to regulate the flow of oil from the bottle. This was the solution that I came out with while keeping the cost of production and the target audience in mind. 
This system in the cap would provide the consumer with the choice of less flow of oil as well heavy flow of oil from the bottle.