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Best choice
SLOW
Contains ingredients with possible health concerns
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Contains harmful ingredients
STOP

function—of beauty

Straight Hair Shampoo

Last verified: March 4, 2026

  • Water
  • Sodium Lauroyl Methyl Isethionate
  • Glycerin
  • Sodium Methyl Cocoyl Taurate
  • Peg-120 Methyl Glucose Dioleate
  • Cocoamidopropyl Hydroxysultaine
  • Sodium Methyl Isethionate
  • Cocos Nucifera (Coconut) Fruit Juice
  • Lauric Acid
  • Acrylates Crosspolymer-4
  • Trisodium Ethylenediamine Disuccinate
  • Glycol Distearate
  • Phenoxyethanol
  • Sodium Chloride
  • Propoxytetramethyl Piperidinyl Dimethicone
  • Sodium Laurate
  • Methyl Gluceth-10
  • Caprylyl Glycol
  • Chlorphenesin
  • Potassium Sorbate
  • Polyquaternium-7
  • Trideceth-6
  • C11-15 Pareth-7
  • Ethylhexylglycerin
  • Hexylene Glycol
  • Guar Hydroxypropyltrimonium Chloride
  • Hydroxypropyl Methylcellulose
  • Sodium Benzoate
  • Sodium Benzotriazolyl Butylphenol Sulfonate
  • Citric Acid
  • Fragrance
  • Citral
  • Citronellol
  • Limonene
  • Linalool
  • Blue 1
  • Red 33

Why This Product is Rated STOP

Straight Hair Shampoo by function—of beauty 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.

Learn more about how Million Marker scores products →

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