Dry shampoo composition

Abstract

To provide a dry shampoo composition that leaves no white residue, is excellent in preventing squeaky feeling and eliminating clumpy hair.SOLUTION: Provided is a dry shampoo composition that is enclosed in an aerosol container and sprayed from the aerosol container, the dry shampoo composition containing at least 1 to 6 mass% of a component (a), 0.01 to 1 mass% of a component (b), and a component (c). Component (a): spherical silica with an average particle size of 5 to 30 μm; component (b): alkylene oxide derivative of formula (1) Z-[O-(PO)a-{(PO)b / (EO)c}-H]n (1) with a ratio of a weight-average molecular weight (Mw) to a z-average molecular weight (Mz) of 5≤Mz / Mw≤60 (Z is a residue obtained by removing all hydroxyl groups from a compound with 1 to 24 carbon atoms and 1 to 6 hydroxyl groups, a and b are numbers from 1 to 100, c is 1 to 200, a+b+c≥10 and b / c=1 / 5 to 5 / 1, (PO)b / (EO)c indicates random copolymerization of PO and EO, and a random ratio (x) of PO and EO is 0.1≤x≤1); and component (c): a propellant.SELECTED DRAWING: None

Claims

1. A dry shampoo composition that is sealed in an aerosol container and sprayed from the aerosol container, comprising: (a) 1 to 6% by mass, (b) 0.01 to 1% by mass, and (c) at least. (a) Components: Spherical silica with an average particle size of 5 to 30 μm (b) Component: an alkylene oxide derivative represented by formula (1), wherein the ratio of the weight-average molecular weight (Mw) to the z-average molecular weight (Mz) calculated from the chromatogram obtained by gel permeation chromatography (Mz / Mw) satisfies the relationship in formula (2). Z-[O-(PO)a-{(PO)b / (EO)c}-H]n (1) (Z represents a residue obtained by removing all hydroxyl groups from a compound having 1 to 24 carbon atoms and 1 to 6 hydroxyl groups, and n represents a number from 1 to 6.) PO represents an oxypropylene group, EO represents an oxyethylene group, a, b, and c represent the average number of moles of each oxyalkylene group added, 0 ≤ a ≤ 100, 1 ≤ b ≤ 100, 1 ≤ c ≤ 200, a + b + c ≥ 10 and b / c = 1 / 5 to 5 / 1, (PO)b / (EO)c indicates that PO and EO are randomly copolymerized, and the randomness rate (x) of PO and EO is 0. 1 ≤ x ≤ 1. 5 ≤ Mz / Mw ≤ 60 (2) (c) Ingredients: Propellant

2. Furthermore, the dry shampoo composition according to claim 1, further comprising (d) component: persimmon tannin in an amount of 0.001 to 0.3% by mass.

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