One to Believe In

Leave-In conditioner

One to Believe In high-performance Leave-in Conditioner instantly starts working to help strengthen, detangle and protect strands.


*82% split end mending in one use.


Suitable for color-treated hair. PARABEN FREE.

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$26.00 / 5 oz
  • THE ONE combines an exclusive marine complex developed with Norwegian Sea Extract and globally-curated active ingredients that provide the foundation for the line. 


    *Quantified by instrumental study conducted on hair tresses by independent US research organization.

  • Mist lightly throughout clean, damp hair from mid-length to ends. Style as desired.


    Salon Tip: For finer hair types, skip the in-shower conditioning step for this lightweight spray. Thick or coarse hair types, spray on ends as desired.

  • Aqua/Water/Eau, Behentrimonium Chloride, Dimethicone, Glycerin, Caprylyl Glycol, Cetyl Alcohol, Polyquaternium-37, Phenoxyethanol, Cocos Nucifera (Coconut) Oil, Fragrance (Parfum), Quaternium-87, Isopropyl Alcohol, Amodimethicone, Panthenol, Caprylhydroxamic Acid, Propylene Glycol, Tocopheryl Acetate, Dimethiconol, Cystoseira Amentacea/Caespitosa Branchycarpa Extract, Limonene, C11-15 Pareth-7, Laureth-9, Trideceth-12, Triolein, Caprylic/Capric Triglyceride, Moringa Oleifera Seed Extract, Soy Amino Acids, Wheat Amino Acids, Citric Acid, Disodium Phosphate, Arginine Hcl, Serine, Threonine, Citral, Linalool, Algin, Carrageenan, Coco-Glucoside, Xanthan Gum, Sodium Benzoate, Potassium Sorbate, Chitosan, Benzyl Alcohol. 253-1.01