Eyeshadow primer is a cream or liquid based product that can be applied before eyeshadow. It's intended purpose is to prime the eyelids so that eyeshadow can be applied more smoothly and evenly. It can also help even out skin tone on the lids as skin tone can make it difficult for some colours to pop. We therefore recommend using an eyeshadow primer as it will allow the eyeshadow makeup to grip onto your skin while enhancing the colours on your eyelids.