Well, for one thing, even though such products claim that they
can last for five years, it would still need to go through a
certain process stage to get to such standard. Even if you could do
a superb shine in one day, it could only last for few weeks until
it fades away. Just like human skin, it needs to be cured,
maintained and kept nourished every now and then. That is why my
company is willing to do a 4 times per month car care.