Start dry. Always dry. This is the one thing people get wrong. Wet skin gums up the roller and drags. Your feet should be completely dry — before a shower, not after. Sit down, put a dark towel under your foot, and switch it on. It's going to make a small pile of white dust and that's normal; that's the whole point.
Light passes, keep it moving. Don't press hard and don't park it in one spot. Glide it across the rough area in short passes, lift, check, repeat. Fifteen to twenty seconds per area is usually plenty. Stop as soon as the skin looks and feels smooth — if you see pink, you've gone too far. You're taking off the dead crust, not sanding down to fresh skin.
Then moisturise. This bit is not optional. Rinse or wipe your feet, dry them, and put a thick cream on straight away — urea-based if you've got one. This is the step that makes the whole thing work, because now there's actually somewhere for it to go. Then repeat the whole thing once a week. Hard skin comes back — that's just what feet do under pressure — so this is a five-minute weekly habit, not a one-time fix. Anyone who tells you otherwise is selling you a disappointment.
