SYNCHRO SKIN GLOW luminizing fluid foundation N4 SYNCHRO SKIN GLOW luminizing fluid foundation #N4 is a medium-beige shade with warm undertones. It provides sheer to medium coverage with a natural luminous finish that leaves skin looking naturally radiant. The lightweight formula is infused with light-diffusing pearls to create a soft-focus effect for a smooth, even complexion. It’s also enriched with mineral water to help hydrate skin for a naturally glowing complexion. This foundation is perfect for those who want a natural, glowing complexion that looks fresh and healthy.