# US 2026/0103409 A1 · Hair care device comprising variable nozzle unit for discharging acidic water > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0103409 A1 - Document ID: US20260103409A1 - Status: Published application - Kind: A1 - Application number: 19/375,388 - Filed: 2025-10-31 - Published: 2026-04-16 - Earliest claimed: 2023-07-14 - Assignees: Jinnys Co., Ltd. - Applicants: Jinnys Co., Ltd. - Inventors: Soo Jong KWON - Web page: https://patentgrep.com/patent/US20260103409A1 ## CPC - C02F 1/4618: {for producing "ionised" acidic or basic water} - A45D 7/04: chemical - A45D 19/00: Devices for washing the hair or the scalp; Similar devices for colouring the hair - A45D 19/02: Hand-actuated implements, e.g. hand-actuated spray heads - A45D 19/10: Backward lavabos - B05B 15/68: Arrangements for adjusting the position of spray heads (B05B15/628, B05B15/652, B05B15/656 take precedence) - C02F 1/461: by electrolysis - C02F 2001/46185: {only anodic or acidic water, e.g. for oxidizing or sterilizing} - C02F 2103/026: {Treating water for medical or cosmetic purposes} - C02F 2201/46145: Fluid flow - C02F 2201/4618: Supplying or removing reactants or electrolyte - C02F 2209/06: pH - C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes) - A45D: HAIRDRESSING OR SHAVING EQUIPMENT (wigs, toupees or the like A41G3/00, A41G5/00; hairdressers' chairs A47C1/04; hair cutting appliances, razors B26B); EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING - B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D) ## Abstract The present invention relates to a hair care device comprising a variable nozzle unit for discharging acidic water and, more specifically, to a hair care device comprising a variable nozzle unit for discharging acidic water, which supplies acidic water for a predetermined period of time to the hair cuticle damaged by exposure to an alkaline agent to perform perming, dyeing, or the like, thereby preventing continuous damage from alkaline residues and, at the same time, restores raised cuticle papillae to their original position to promote hair health, and is compatible with the hair positions of various users by varying the position of discharge nozzles according to the user's hair position. ## Claims ### Claim 1 A hair care device for improving a hair condition by discharging acidic water to a user's hair, comprising: an electrolysis unit (100) configured to electrolyze water to generate alkaline water and acidic water; and an acidic water discharge unit (200) configured to support the user's head portion and discharge the acidic water supplied from the electrolysis unit (100) toward the user's hair, wherein the acidic water discharge unit (200) comprises a discharge nozzle (222) configured to variably fix a position for discharging the acidic water toward the user's hair. ### Claim 2 (depends on 1) The hair care device according to claim 1, wherein the acidic water discharge unit (200) comprises: a support housing (210) configured to support the user's head portion and collect the acidic water discharged from the discharge nozzle (222) and discharge the collected acidic water to the outside; and a variable nozzle unit (220) coupled to the support housing (210) and configured to discharge the acidic water supplied from the electrolysis unit (100) to the user's head portion, while allowing a position of the discharge nozzle (222) to be varied. ### Claim 3 (depends on 2) The hair care device according to claim 2, wherein the variable nozzle unit (220) comprises: a flexible tube (221) coupled to the support housing (210) so as to allow its position to be varied, the flexible tube (221) being connected to the electrolysis unit (100) to receive the acidic water; and a discharge nozzle (222) coupled to one end of the flexible tube (221) to receive the acidic water delivered therethrough and discharge the received acidic water. ### Claim 4 (depends on 1) The hair care device according to claim 1, wherein the electrolysis unit (100) comprises: a water storage unit (110) configured to store water; a decomposition unit (120) configured to receive water from the water storage unit (110), perform electrolysis, and generate acidic water and alkaline water; and an acidic water supply unit (130) configured to supply the acidic water generated by the decomposition unit (120) to the acidic water discharge unit (200). ### Claim 5 (depends on 4) The hair care device according to claim 4, wherein the electrolysis unit (100) further comprises: a concentration sensor (140) configured to measure a pH concentration of the acidic water generated by the decomposition unit (120); an electrolyte supply unit (150) configured to supply an electrolyte to the water storage unit (110); and a control unit (160) configured to receive the pH concentration information from the concentration sensor (140) and control the electrolyte supply unit (150) to supply the electrolyte to the water storage unit (110) when the measured pH concentration is lower than a preset concentration.