You may start noticing more grey in your hair once you’re in your 30s, but it is influenced by many factors such as stress, genetics, and lifestyle habits. To sum it up, hair turns grey when the cells stop producing pigment. While there is no way to reverse the condition, you can delay it by eating the right nutrients and maintaining a healthy lifestyle. Once you’ve done your best and age takes its natural course, why not embrace the silver locks? Celebrities like Kate Moss and Jamie Lee Curtis are examples of how saltand-pepper hair can be really chic.