I use this system for years, it does not replace a total cleaning, but when they return to muddy it is very convenient to clean and polish up its chain in a few pedal rotations. Lubrication and the chain is like new! It is true that hair get damaged over time, but this is normal .... lifespan on average 2 years in normal use. Considering the price it is enough to always have on hand. I recommend it for its convenience.