Methods for processing hair and tools for bending hair

Abstract

To provide a technique capable of improving persistence of the effect of a hair treatment liquid.SOLUTION: A method for treating hair includes a first step of curving hair in conditions that a curvature radius is 10 μm or more and 500 μm or less, and a tensile force is 0.1 MPa or more and 270 MPa or less, and a second step of applying a hair treatment liquid. A tool for curving hair includes a first member and a second member. The first member has a protrusion extending in a first direction, and protruding in a second direction perpendicular to the first direction, and the second member has a pair of support parts extending in the first direction, and supporting hair at both sides of the protrusion. A curvature radius of the protrusion in a cross section along the second direction is 10 μm or more and 500 μm or less. The tool is used by moving the first member and the second member in a longitudinal direction relative to hair while curving hair at an angle of 30° or more and 120° or less by sandwiching hair between the first member and the second member so that the longitudinal direction of hair crosses the first direction.SELECTED DRAWING: Figure 1

Claims

1. A method of treating hair, The process involves bending the aforementioned hair under conditions of a radius of curvature of 10 μm or more and 500 μm or less, and a tension of 0.1 MPa or more and 270 MPa or less, to create a nanoporous state. The process of applying a hair treatment solution to the hair, Methods that include...

2. In the method according to claim 1, The hair treatment solution is at least one selected from the group consisting of hair dyes, hair colorants, bleaching agents, color removers, hair growth agents, hair restoration agents, treatment agents, and perming agents.

3. The method according to claim 1 or claim 2, further, A method comprising the step of heat-treating the hair after the coating step so that the temperature of the hair is between 40°C and 150°C.

4. In the method according to claim 1 or claim 2, The bending step is performed when the temperature of the hair is between 40°C and 150°C.

5. The method according to claim 1 or claim 2, further, A method comprising the step of applying at least one of water and a liquid containing a surfactant to the hair before the bending step.

6. In the method according to claim 1 or claim 2, The bending step involves bending the hair at an angle of 30° to 120°.

7. A device that bends hair to create a nanoporous state, First member and The second member and Equipped with, The first member is, It has a protrusion that extends along a first direction and projects in a second direction perpendicular to the first direction, The second member is, It extends along the first direction and has a pair of support parts on both sides of the protrusion that support the hair, The radius of curvature of the convex portion in the cross-section along the second direction is 10 μm or more and 500 μm or less. The hair is sandwiched between the first member and the second member such that its longitudinal direction intersects the first direction, and the hair is bent at an angle of 30° to 120° while the first member and the second member are moved along the longitudinal direction relative to the hair. Equipment.

8. In the apparatus described in claim 7, An apparatus in which the angle of the protrusion in the cross-section is 5° or more and 90° or less.

9. In the apparatus according to claim 7 or claim 8, A device in which the first member and the second member are connected to each other at their ends in the first direction.

Images