ULTRALIGHT SMOOTH® Conditioner 

Hair is made up of protein. Every touch, every treatment, every style you love—it all rewrites your hair’s protein. When protein is damaged, hair’s look and feel are compromised. That’s why Nexxus uses protein science not just to repair hair but to restore its ability to perform. It isn't about one perfect hair day. It's about a lifetime of healthy hair, built strand by strand.

When hair is prone to frizz, several critical protein-related issues occur: the cuticle becomes disrupted, the protective lipid layer breaks down, and porosity increases—allowing water to penetrate the fiber. This exposure swells the hair, leading to frizz and compromising its ability to maintain a smooth, consistent structure.

ULTRALIGHT SMOOTH®, our smoothing collection, is powered by FRIZZ DEFLECTOR™ technology with biomimetic 18-MEA to restore hair’s natural lipid layer and create a hydrophobic barrier. The system includes a weightless shield that forms an invisible barrier to fight frizz without heaviness, delivers instant shine by sealing the cuticle, and provides hydration without weigh-down to leave hair soft, smooth, and bouncy. This smoothing conditioner also features protein strength actives to repair hair internally for lasting strength and healthy hair. This system laminates the cuticle for an ultra-smooth finish, deflecting humidity and locking in shine—so hair stays sleek, soft, and frizz-free for up to 72 hours.

Nexxus, the protein science behind powerful hair since 1979.