Yes, Energizer Purifying Gel can be left on, ideally as an overnight mask even though most of the whole vitamin C will be absorbed in the first five minutes. We do not recommend that Energizer Purifying Gel be used and then left on before being in the sun, because some people will have a photosensitive reaction.

We recommend that you use the Energizer Purifying Gel twice a week at first and slowly increase. Oily skin will balance and is a positive sign that skin is rejuvenating.

You can use the Energizer Purifying Gel daily. You may also use the gel as mask twice a week to rejuvenate your skin.

Yes, the Energizer Purifying Gel is safe for children.