I have been suffering from hair loss and premature graying of hairs for last few months after two consecutive pregnancies. Initially I never thought that I have to take some serious step but when my grey hairs started peeping out, I was really shocked. I started using coconut oil mixed with equal amounts of olive oil & castor oil and few drops of lemon juice. (I discovered this home remedy for hair loss after a tiring research) Though I have used it a few times and I am not sure about grey hairs but it is really wonderful to use. My hair loss has diminished, my hairs feel shinier & softer and I am really fresh and cool. You can also try this if you have any hair problem but be patient may be a different proportion of ingredients will work for you.