Shaving Foam
The cheapest and most convenient product, cans of shaving foam can easily be found available in shops and supermarkets.
The problem, however, is that while the foams seem to produce a pillowy lather, it is mostly made up of air, leading to a surprisingly thin lather. This thin lather means less lubrication, which results in heavier use of the blade, increasing the risk of nicks & cuts. They do lubricate the skin, making them a better option that bath soap or shower gels, but not by much.
Additionally, shaving foam often contains high levels of alcohol which, over time, can dry out the skin and lead to irritation. Not to mention there are often other chemicals in the foam which can cause skin irritation and result in a rash.
Just like the previous option, we do not recommend the use of shaving foam as a daily habit.