The secret to Shania Twain’s luxurious locks is this ‘salon-quality’ $9 Garnier serum that her stylist swears by

Shania Twain is an icon of ageless beauty, and at 58 years old (yes, really!), she somehow looks even better than ever. Of course, the Queen of Country Pop benefits from the expertise of the stylists around her — including celebrity hairstylist Dimitris Giannetos, who revealed that the key to the recent style he created…