Search

EP-4299049-B1 - HAIR/SCALP CARE METHOD AND HAIR/SCALP CARE DEVICE

EP4299049B1EP 4299049 B1EP4299049 B1EP 4299049B1EP-4299049-B1

Inventors

  • YOKOYAMA KEIKO
  • INOUE SHINSUKE

Dates

Publication Date
20260506
Application Date
20211217

Claims (18)

  1. A hair/scalp care method comprising: a washing step of washing a target head part that is one or both of hair and a scalp of a human body; a drying step of drying the target head part that has been washed in the washing step; and being characterized in that the method comprises a fine water particle application step of applying fine water particles having a temperature of 40°C or lower and having a size of 50 nanometers or less to the target head part.
  2. The hair/scalp care method according to claim 1, further comprising an agent application step of applying an agent to the target head part, wherein the washing step is executed after a predetermined time period has passed from completion of execution of the agent application step.
  3. The hair/scalp care method according to claim 2, wherein the agent application step is executed a plurality of times, and wherein the fine water particle application step is executed after completion of execution of one agent application step and before a start of execution of a next agent application step.
  4. The hair/scalp care method according to claim 2, wherein the target head part is hair, wherein the fine water particle application step is executed after completion of execution of the agent application step and before a start of execution of the drying step, and wherein in the fine water particle application step, the fine water particles are applied to the hair in a direction from a hair tip side toward a hair root side of the hair.
  5. The hair/scalp care method according to claim 1 or 2, wherein the target head part is hair, wherein the fine water particle application step is executed simultaneously with execution of the drying step or after completion of execution of the drying step, and wherein in the fine water particle application step, the fine water particles are applied to the hair in a direction from a hair root side toward a hair tip side of the hair.
  6. The hair/scalp care method according to claim 2, wherein the target head part is hair, wherein the agent is a perming agent including a first agent and a second agent that are liquid, wherein the agent application step includes: a first agent application step of applying the first agent to the hair; and a second agent application step of applying the second agent to the hair after completion of execution of the first agent application step, and wherein the fine water particle application step is executed before a start of execution of the first agent application step, or after completion of execution of the first agent application step and before a start of execution of the second agent application step.
  7. The hair/scalp care method according to claim 6, wherein the first agent has a function of cutting internal tissue of the hair, and wherein the second agent has a function of binding internal tissue of the hair cut by the first agent, the method further comprising: a first leaving step of leaving the hair to stand for a first predetermined time period immediately after completion of execution of the first agent application step; and a second leaving step of leaving the hair to stand for a second predetermined time period immediately after completion of execution of the second agent application step, wherein the fine water particle application step is executed after completion of execution of the first leaving step and before a start of execution of the second agent application step.
  8. The hair/scalp care method according to claim 2, wherein the target head part is hair, wherein the agent is a bleaching agent, and wherein the fine water particle application step is executed after completion of execution of the washing step and before a start of execution of the drying step.
  9. The hair/scalp care method according to claim 2, wherein the target head part is hair, the method further comprising: a finishing step of being executed after completion of execution of the drying step and arranging the hair, wherein the fine water particle application step is executed in a period from before a start of execution of the agent application step to after completion of execution of the finishing step.
  10. The hair/scalp care method according to claim 1 or 2, wherein the target head part is hair, the method further comprising: a heat treatment step of heat-treating the hair.
  11. The hair/scalp care method according to claim 10, wherein the fine water particle application step is executed before a start of execution of the heat treatment step.
  12. The hair/scalp care method according to claim 1, wherein the fine water particle application step is executed after completion of execution of the washing step or after completion of execution of the drying step.
  13. The hair/scalp care method according to claim 2, wherein an agent applied in the agent application step includes at least one of a coloring agent, a treatment agent, a perming agent, a bleaching agent, or a hair straightening agent.
  14. A hair/scalp care device being characterized in that it comprises: a fine water particle generating element (11) configured to be, by a temperature decrease, in an absorption state of absorbing moisture on a surface, and configured to be, by a temperature increase, in a release state of releasing moisture, having been absorbed, as fine water particles having a temperature of 40°C or lower and having a size of 50 nanometers or less; applying means (12) configured to apply the fine water particles having been released from the fine water particle generating element (11) to a target head part that is one or both of hair and a scalp of a human body; controlling means (23) configured to control the fine water particle generating element (11) and the applying means (12); and an operation part (21) configured to be operated for causing the fine water particles to be applied to the target head part between a period before execution of washing of the target head part and a period after execution of drying of the target head part.
  15. The hair/scalp care device according to claim 14, wherein the operation part (21) is configured to be operated for causing the fine water particles to be applied to the target head part between a period before execution of agent application to the target head part prior to the execution of the washing and a period after execution of drying of the target head part.
  16. The hair/scalp care device according to claim 14, wherein the controlling means (23) is configured to apply fine water particles having a temperature equal to or higher than a glass-transition temperature of a protein structure of hair to the target head part.
  17. The hair/scalp care device according to claim 14, wherein the target head part to which fine water particles are to be applied by the applying means (12) includes hair, and the fine water particle generating element (11) is configured to release the fine water particles larger than a single molecule of water to allow the fine water particles to remain in hair and to improve a state of cuticles of hair.
  18. The hair/scalp care device according to claim 14, wherein the target head part to which fine water particles are to be applied by the applying means (12) includes hair, and the fine water particle generating element (11) is configured to release the fine water particles that are uncharged to allow the fine water particles to permeate into hair and to improve a state of cuticles of hair.

Description

TECHNICAL FIELD The present invention relates to a hair/scalp care method and a hair/scalp care device for care for hair or a scalp. BACKGROUND ART When a hair care method is performed in order to care for hair to allow the hair to be in a desired state by performing an operation such as perming, bleaching, treatment, or coloring on the hair, an agent used for each treatment operation is applied to the hair. At this time, the agent may not sufficiently permeate into the hair, and the reaction of the agent may not sufficiently proceed. In such cases, the effect brought by the agent may be reduced. Document JP 2019 077628 A relates to a method for applying straight permanent to hair with less damage to hair. Document JP 2020 116032 A relates to a heating and blowing apparatus to perform heating and blowing including fine water with a simple structure. Patent Literature 1 discloses a hair coloring method configured to increase a hair temperature by applying steam to hair and to bring the periphery of the hair into a high humidity state, during agent application. By increasing the hair temperature, the reaction of the agent applied to the hair is promoted, and by placing the hair under a high humidity environment, the hair is wetted and the permeation of the agent into the hair is promoted. Further, a device for hair coloring according to Patent Literature 1 is configured to be able to deliver only steam at a set temperature by mixing steam generated in a steam generating device with outside air in a mixing chamber to set a temperature of the steam, and by separating, in a space inside the mixing chamber, condensed water generated through cooling of the steam at the time of the temperature setting. Accordingly, the condensed water generated through the cooling of the steam is removed, and thus an agent applied to hair is prevented from being subjected to dilution due to the condensed water. CITATIONS LIST PATENT LITERATURE Patent Literature 1: JP 2000-201731 A SUMMARY OF INVENTION TECHNICAL PROBLEMS When steam is applied to hair as described in Patent Literature 1, the hair is exposed to a high temperature to be damaged. In addition, according to Patent Literature 1, although the condensed water is removed, the steam adhering to the hair is dew condensed on the hair surface. The dew condensation water thus generated grows on the hair surface to become large water droplets, and remains on the hair surface without permeating into the hair. When the water droplets remain on the hair surface, moisture is not sufficiently supplied into the hair, and thus damage of the hair cannot be covered by moisture replenishment. Further, when an agent is applied to the hair, the water droplets remaining on the hair surface are mixed with the agent to dilute the agent. Thus, the effect brought by the agent may be reduced. The present invention provides a hair/scalp care method capable of reducing damage to hair or repairing damaged hair, and further enhancing an effect of an agent in a case of using the agent. SOLUTIONS TO PROBLEMS The present disclosure provides a hair/scalp care method including a washing step of washing a target head part that is one or both of hair and a scalp of a human body, a drying step of drying the target head part that has been washed in the washing step, and a fine water particle application step of applying fine water particles having a temperature of 40°C or lower and having a size of 50 nanometers or less to the target head part. According to the present disclosure, the size of the fine water particles applied to the target head part is as very small as 50 nanometers or less, and the applied fine water particles enter the target head part. At this time, when the fine water particles are uncharged particles, the fine water particles are not attracted to the positively charged surface of the hair, and further easily enter the target head part. Thus, by executing the fine water particle application step, moisture is supplied to the target head part, and damage to the target head part can be reduced or the damaged target head part can be repaired. Further, the fine water particles applied to the target head part by executing the fine water particle application step efficiently permeate into the target head part, and thus the surface of the target head part is substantially not wet after the execution of the fine water particle application step. Therefore, when an agent is used, the agent is not subjected to dilution due to the moisture remaining on the surface of the target head part. In addition, the agent efficiently permeates into the hair or the scalp along with the fine water particles, and thus the effect of the agent can be enhanced. The hair/scalp care method according to the present disclosure may not include an agent application step of applying an agent to the target head part. This is because, without applying an agent, it is possible to reduce damage to the originally damaged target head