This is a very common scam that many vehicle owners fall for. The general perception that more is better isn’t always the case, especially in the detailing industry. A ceramic coating cannot be layered, this is just wasting the product and your hard-earned money. Professional Detailers do a second coat to ensure even coverage, not a second layer. Ceramic coatings bond to the clear coat, providing protection. They don’t bond to themselves. So, the next time you see someone trying to sell you multiple layers, walk away.