Both! The Head Shaver is fully waterproof, so you can use it:
- Dry: quick and easy, no prep needed.
- Wet: with water, shaving foam, gel or oil, even in the shower.
It's worth trying both to see what suits your skin. Many people find a wet shave with a bit of foam or gel gives a smoother finish and less irritation, especially if they've had shaving rash before.
Tip: when you're new to it, give your skin a few shaves to get used to it. It's a different feel from a blade razor.