: IGK Permanent Color Kit (noted for high shine) and L'Oréal Paris Féria Multi-Faceted Shimmering Permanent Hair Color .
: Silver is one of the hardest colors to maintain. You will need a sulfate-free purple shampoo (e.g., L'Oréal EverPure Silver Care) to prevent the color from fading back to brassy yellow.
Yes, you can buy silver hair dye, and there are many options ranging from one-day temporary sprays to permanent kits for home use. Types of Silver Hair Dye
: L'Oréal Paris Colorista 1-Day Spray and Mofajang Styling Wax Silver Grey. Critical Steps for Success
Achieving a true silver at home is famously difficult because of how hair color chemistry works:

