It is taken once a week for one to two months. Tone tidies up over that period, because the vitamin delivered slows the process that makes pigment and existing pigment takes time to fade. A single session makes little visible difference — it shows as sessions add up.

The current is very weak, so it feels no more than a slight prickle. It is not strong enough to move muscle — only enough to push the ingredient in. There is no downtime and you can wear make-up the same day, and the intensity can be lowered if it feels uncomfortable, so do not endure it.

Applied alone, vitamins do not get far into the skin, because water-soluble ingredients such as vitamin C struggle to cross the skin’s oily barrier. Pushing them in with a current increases absorption and makes them more effective as an add-on to pigment or recovery care.