Witch Anti Blemish Skin Clearing Primer with witch hazel extract, holds makeup in place and helps protect skin from the causes of blemishes. Witch Anti-blemish Skin Clearing. Primer is designed to help prepare your skin for foundation by mattifying and absorbing excess oils, providing a smooth, silky base that helps you achieve an even and long lasting finish with any foundation or powder. Added to this, the Witch Anti-blemish Skin Clearing Primer also helps prevent and target blemishes by protecting skin from the layers of makeup which can cause or aggravate blemishes. Helps prevent and target blemishes. Mattifies and absorbs excess oil. Can be used alone or under your favourite foundation or powder.