Why does the blade have “1 / 2” on one side and “3 / 4” on the other?
Each blade is designed to deliver up to four comfortable shaves for most users.
- 1 / 2 side – Use this side for your first and second shaves
- 3 / 4 side – Flip the blade and use this side for your third and fourth shaves
This simple numbering system makes it easy to remember where you are in the blade’s life.
Why should I flip the blade after two shaves?
Flipping the blade helps you:
- Maintain consistent shave quality
- Avoid unknowingly overusing a blade
- Get the most out of each blade safely and comfortably
It is a practical habit rather than a technical requirement.
How many shaves can I get from one RK blade?
Most users get 3–4 shaves per blade, depending on:
- Beard coarseness
- Shave frequency
- Skin sensitivity
- Preparation and technique
If you experience tugging, irritation, or reduced smoothness, it is best to replace the blade—regardless of the number.