# US 12,108,858 B2 · Hair volumizing treatments with in situ diagnostic assessment and formula dispensing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,108,858 B2 - Document ID: US12108858B2 - Status: Granted - Kind: B2 - Application number: 17/491,025 - Filed: 2021-09-30 - Published: 2023-03-30 - Granted: 2024-10-08 - Earliest claimed: 2021-09-30 - Assignees: L'oreal - Applicants: L'Oreal - Inventors: Dominic Akerele; Fred Orsita; Richard Besen; Guive Balooch - Web page: https://patentgrep.com/patent/US12108858B2 ## CPC - A45D 24/22: Combs with dispensing devices for liquids, pastes or powders - A45D 24/007: {power-driven} - A45D 24/10: combined with additional devices - A46B 15/0004: {with a controlling means} - A46B 15/0034: {with a source of radiation, e.g. UV, IR, LASER, X-ray for irradiating the teeth and associated surfaces} - G06T 7/0012: {Biomedical image inspection} - G06T 7/0014: {using an image reference approach} - G06T 7/12: Edge-based segmentation - A45D 2044/007: {Devices for determining the condition of hair or skin or for selecting the appropriate cosmetic or hair treatment} - G06T 2207/10024: Color image - G06T 2207/30004: Biomedical image processing - G06T 2207/30088: Skin; Dermal - 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 - A46B: BRUSHES (handles not integral with brushware B25G) - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL ## Abstract A diagnostic formula applicator can include a fluid dispensing assembly coupled with a comb having a plurality of tines. A tine of the plurality of tines can be configured to dispense a fluid formula to a region of a biological surface via at least one fluid conduit. The diagnostic formula applicator can include hair diagnostic circuitry operably coupled to the fluid dispensing assembly. The diagnostic circuitry can be configured to actuate the fluid dispensing assembly to deliver the fluid formula via the at least one fluid conduit, responsive to determining a user-specific hair cosmetic aspect from hair and scalp sensor information. ## Claims ### Claim 1 A diagnostic formula applicator, comprising: a fluid dispensing assembly coupled with a comb having a plurality of tines, wherein a tine of the plurality of tines is configured to dispense a fluid formula to a region of a biological surface, via at least one fluid conduit; and hair diagnostic circuitry operably coupled to the fluid dispensing assembly, the diagnostic circuitry configured to actuate the fluid dispensing assembly to deliver the fluid formula via the at least one fluid conduit, responsive to determining a user-specific hair cosmetic aspect from hair and scalp sensor information, wherein the hair diagnostic circuitry is operably coupled with a radiation sensor, and the diagnostic formula applicator further comprising one or more non-transitory memory devices storing computer-readable instructions that, when executed by the hair diagnostic circuitry, cause the hair diagnostic circuitry to perform operations comprising: generating an image of the region of the biological surface using the radiation sensor, the region comprising skin, hairs, and hair follicles; attributing the user-specific hair cosmetic aspect to the region of the biological surface using the image; and dispensing the fluid formula to the region via the conduit using the fluid dispensing assembly, based at least in part on the one or more cosmetic aspects. ### Claim 2 (depends on 1) The diagnostic formula applicator of claim 1, wherein the hair diagnostic circuitry is configured to actuate the fluid dispensing assembly to deliver the fluid formula responsive to a determination that the user-specific hair cosmetic aspect satisfies a threshold hair volume, a threshold hair thickness, a threshold hair follicle density, or a threshold hair temperature. ### Claim 3 (depends on 1) The diagnostic formula applicator of claim 1, wherein the hair (original) diagnostic circuitry is configured to actuate the fluid dispensing assembly to deliver the fluid formula responsive to a determination that the user-specific hair cosmetic aspect satisfies a user-specific hair volume, a user-specific hair thickness, a user-specific hair follicle density, or a user-specific hair temperature. ### Claim 4 (depends on 1) The diagnostic formula applicator of claim 1, wherein the hair diagnostic circuitry is configured to actuate the fluid dispensing assembly to deliver the fluid formula responsive to a determination that the user-specific hair cosmetic aspect differs from a reference combability measure, a reference damage measure, a reference elasticity measure, a reference frizziness measure, a reference malleability measure, a reference static charge measure, a reference retention of styling measure, a reference smoothness measure, a reference softness measure, or a reference stiffness measure. ### Claim 5 (depends on 1) The diagnostic formula applicator of claim 1, wherein the hair diagnostic circuitry is configured to actuate the fluid dispensing assembly to deliver the fluid formula responsive to a determination that the user-specific hair cosmetic aspect meets or exceeds a threshold shape, a threshold shine, a threshold texture, or a threshold volume. ### Claim 6 (depends on 1) The diagnostic formula applicator of claim 1, wherein the hair and scalp sensor information comprises images of the region of the biological surface. ### Claim 7 (depends on 1) The diagnostic formula applicator of claim 1, wherein the comb further comprises a contact sensor in electronic communication with the hair diagnostic circuitry, the contact sensor configured to detect a physical contact between the tine and the biological surface. ### Claim 8 (depends on 1) The diagnostic formula applicator of claim 1, wherein the tine is a (original) first tine, wherein the conduit is a first conduit, and wherein a second tine of the plurality of tines comprises a second conduit fluidly coupled with the fluid dispensing assembly. ### Claim 9 (depends on 1) The diagnostic formula applicator of claim 1, further comprising a radiation source, electronically coupled with the hair diagnostic circuitry. ### Claim 10 (depends on 9) The diagnostic formula applicator of claim 9, wherein the radiation source comprises a source of polarized radiation. ### Claim 11 (depends on 1) The diagnostic formula applicator of claim 1, further comprising a fluid reservoir, wherein the fluid dispensing assembly comprises a port configured to removeably couple with the fluid reservoir. ### Claim 12 (depends on 11) The diagnostic formula applicator of claim 11, wherein the fluid reservoir comprises a compartment containing a topical antihypertensive vasodilator. ### Claim 13 (depends on 11) The diagnostic formula applicator of claim 11, wherein the fluid reservoir comprises a compartment containing a topical antipruritic. ### Claim 14 (depends on 11) The diagnostic formula applicator of claim 11, wherein the fluid reservoir comprises a compartment containing a cosmetic formula. ### Claim 15 (depends on 1) The diagnostic formula applicator of claim 1, wherein the fluid dispensing assembly comprises an electronically actuated valve, in electronic communication with the hair diagnostic circuitry, the valve controlling a flow of a fluid formula from the fluid dispensing assembly to the conduit. ### Claim 16 (depends on 1) The diagnostic formula applicator of claim 1, wherein the radiation sensor comprises a polarized-light camera or an infrared camera. ### Claim 17 (depends on 1) The diagnostic formula applicator of claim 1, wherein attributing the user-specific hair cosmetic aspect to the region of the biological surface comprises: detecting one or more edges in the image, the edges defining the hairs and the hair follicles; and estimating a characteristic width of the hairs in the image using the edges; estimating a number of hair follicles in the region using the edges; determining a size of the region using the image; determining a hair volume using the number of hair follicles and the size; or determining a hair thickness using the characteristic width. ### Claim 18 (depends on 1) The diagnostic formula applicator of claim 1, wherein dispensing the fluid formula comprises: receiving a signal from a contact sensor, electronically coupled with the hair diagnostic circuitry, the signal indicating a physical contact between the tine and the biological surface; and actuating an electronically actuated valve, electronically coupled with the hair diagnostic circuitry, the valve controlling a flow of the fluid formula from the fluid dispensing assembly to the conduit.