The Concealer stick is useful not only for hiding reddish pimples, but also for blemishes, visible blood vessels and any other red marks on the skin. Green neutralizes shades of red and is therefore ideal for camouflaging redness under the foundation.
Always use the concealer stick first, under the foundation or under the cover stick. Apply in a very thin layer to prevent the skin from looking greyish. Apply the stick directly to the skin, with your fingers or a brush.