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Abstract

1. A sulphate free cleansing composition for hair and scalp comprising, in an aqueous continuous phase: a total amount of anionic surfactant, amphoteric surfactant and zwitterionic surfactant consisting of: (i) from 3 wt % to 13 wt %, by weight of the total composition at 100% activity, of an alpha olefin sulfonate anionic surfactant of general formula (I): R¹—CH═CH—CH₂—SO₃⁻M⁺ (I) in which R¹ is selected from linear or branched alkyl groups having from 11 to 13 carbon atoms and mixtures thereof; and M is a solubilizing cation; (ii) from 1 to 6%, by weight of an amphoteric or zwitterionic surfactant, selected from an alkyl betaine of general formula (II) R²—N⁺(CH₃)₂—CH₂—COO⁻M⁺ (II) wherein R²=C12 (Lauryl) or Coco derived; an alkyl hydroxy sultaine of general formula (III), R³—N+(CH₃)₂—CH₂—CH(OH)—CH₂—SO₃⁻M⁺ (III) wherein R³=C12 (Lauryl) or Coco derived; an alkyl aminopropyl hydroxy sultaine of general formula (IV), R⁴—CO—NH—(CH₂)₃—N⁺(CH₃)₂—CH₂—CH(OH)—CH₂—SO₃⁻M⁺ (IV) wherein R⁴=C12 (Lauryl) or Coco derived; an alkyl amphoacetate of general formula (V), R⁵—CO—NH—(CH₂)₂—N(CH₂—CH₂—OH)(CH₂—COO⁻M⁺) (V) wherein R⁵=C12 (Lauryl) or Coco derived; and mixtures thereof; (iii) from 0.05 to 0.9 wt % of a cationic conditioning polymer; (iv) from 0.05 to 10 wt % of a silicone emulsion; (v) a cationic deposition polymer; (vi) an inorganic electrolyte; and (vii) water in which the weight ratio of (i) to (ii) ranges from 1:1 to 6:1 and the pH of the composition is from 3 to 6.5.

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First Claim