Buy your weekday smoothies and get your weekend ones for free. (7 for the price of 5!)
Small in size, big on performance. This mini comb glides effortlessly through knots, tames curls, and keeps hair smooth and manageable wherever you go. Ergonomic, sturdy, and travel-ready—your hair’s new favorite companion.
Liquid Complex Culture
Our unique complexes define all Number 4 products and draw upon water and an advanced delivery system to infuse active ingredients and botanical agents for consistent, high performance results.
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The Jet Set
Transport strands with perfectly petite versions of your favorite formulas. Good things come in small packages.