If your Snow Foam Lance has started to produce a thinner foam, then there is a chance it could be the gauze filter. These often get clogged up especially when the lance is not rinsed after use from snow foam residue and minerial deposits, most typically in hard water area.
These gauzes are eazy to replace with only some basic tools and knowledge required. See here for our guide
We recommend you flush your Foam lance through with clean water after each use, also open the bottle and put you finger over the suction hose while flushing.
* Contents: 1 x Metal Filter Gauze * Diameter: 14mm * Height: 10mm