Personal Hair Advisor: One of the most common complaints from clients is that their hair isn't shiny enough. Often the culprit is over processed hair. The more chemicals you put on your hair, the less shiny it will be. The key to shiny hair is good hair health, not necessarily the products you use.
Adding shine back into your hair begins in the shower. As unpleasant as this may seem during the winter months, a cold-water rinse is a great way to boost up the glossy quotient of your locks. The cold water will close, and thus smooth, the cuticle, making it appear shinier.
If you're not willing to torture yourself in the name of beauty, go for as cold a rinse as you can stand, and then use a finishing creme during and after your blow-dry to add shine. As for silicone products, I usually recommend that people avoid them. Although they do add shine, silicone-based products are often difficult to wash out, resulting in a buildup in the hair that only serves to dull it rather than add shine. Another popular remedy is a vinegar rinse. This is fine if you use it sparingly -- too many vinegar rinses will only dry out your hair and, again.
For women with gray hair, adding shine can be particularly tough. Gray hair has a tendency to take on a yellowish cast because of airborne particles. To make gray hair super shiny, I recommend a professional gloss treatment in a salon. That will seal the cuticle, so that nothing can penetrate it and dull the color, and should last for up to five weeks. You should also use a shampoo specifically designed for gray hair, but make sure that it isn't too violet in color, or your hair will end up blue.