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Contains harmful ingredientsSTOP
OLAPLEX
No.9 Bond Protector Nourishing Hair Serum
Last verified: March 31, 2026
- Water/Aqua/Eau
- Propanediol
- Betaine
- Quaternium-22
- Bis-Aminopropyl Diglycol Dimaleate
- Sodium Hyaluronate
- Cetrimonium Chloride
- Panthenol
- Hydroxyethylcellulose
- PVP
- Guar Hydroxypropyltrimonium Chloride
- Furcellaria Lumbricalis Extract
- Pelvetia Canaliculata Extract
- Xylitylglucoside
- Polyquaternium-44
- Anhydroxylitol
- Maltitol
- Citric Acid
- Trisodium Ethylenediamine Disuccinate
- Xylitol
- Ethylhexylglycerin
- Sodium Hydroxide
- Sorbic Acid
- Phenoxyethanol
- Sodium Benzoate
- Fragrance (Parfum)
- Citral
- Citronellol
- Hexyl Cinnamal
- Limonene
- Linalool
Why This Product is Rated STOP
No.9 Bond Protector Nourishing Hair Serum by OLAPLEX has been evaluated by Million Marker and contains ingredients with known health concerns. This product is rated STOP, indicating higher concern.
We recommend avoiding STOP-rated products and seeking safer alternatives from our GO or SLOW categories.
Frequently Asked Questions
