Thank you for choosing XPEL to protect your car! The Ceramic Boost Spray is similar to the sealant in that it helps protect the film from environmental contaminants and adds a little extra depth and shine. The Ceramic Boost does go an extra step and adds a hydrophobic affect. If you haven't already, email us at
[email protected] with your t-shirt size and shipping info so I can send you a free bottle of the Ceramic Boost to try for yourself. Thank you again for your support.