My shaver can not do without

This spray seems to me essential to the longevity of Philips shaving heads
Used every week, between two "washes" complete razor in his specific tray approximately every month (in fact when the battery is empty), this spray visibly gives maximum efficiency to shaving heads.
Rinsing them under the tap with hot water is well complemented by a thorough lubrication is -amha - absolutely necessary to obtain a "tool" in perfect condition.
I also subscribed to receive this automatically spray quarterly (duration of a bottle) and never miss ...
I highly recommend, even if this increases the cost of shaving, I think it will end up on the final heads replacement savings ...