Products are split into three levels based on ingredient labels
purezero
Biotin Strengthening Shampoo
Last verified: February 6, 2026
- Water
- Sodium C14-16 Olefin Sulfonate
- Cocamidopropyl Betaine
- Glycol Distearate
- Ppg-2 Hydroxyethyl Coco/Isostearamide
- Sodium Chloride
- Biotin
- Hydrolyzed Rice Protein
- Coco-Betaine
- Guar Hydroxypropyltrimonium Chloride
- Sodium Cocoyl Isethionate
- Polyquaternium-10
- Peg-120 Methyl Glucose Dioleate
- Citric Acid
- Ethylhexylglycerin
- Phenoxyethanol
- Fragrance
Why This Product is Rated STOP
Biotin Strengthening Shampoo by purezero 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
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