THE NUE CO Skin Filter serum brightens and evens skin tone. This all-in-one phyto-retinol, AHA, and HA serum is designed to exfoliate, hydrate, and tighten. It's a daily treatment intended to deliver smoother, more radiant skin. The serum works to provide the benefits of a retinol without the irritation. Skin is left feeling tighter and more even with consistent use of this facial serum.