In one embodiment, a hydration sensor or sensing element is configured to measure the hydration level of a user. The sensing element can include a water-permeable material positioned in between two water-impermeable material. The sensing element can be coupled to a bottle of fluid, or a carrier with a timer. The sensing element can be incorporated into a handheld device. The sensing element can be a disposable element, an element applicable for more than one-time use, or a re-usable element. The sensing element or sensor can be calibrated for a specific user or a group of users. One or more additional sensors that do not measure hydration level of the user can be coupled to a hydration sensing element to determine the amount of fluid consumption for the user in different conditions.

This invention provides a wig capable of obtaining data indicative of a head environment. This invention includes at least one sensor (2) and a storage section (31) in which sensed data obtained by the at least one sensor (2) is stored.

A technique relates to an imaging apparatus. Extensions are coupled to a support structure, the extensions being spaced a predefined distance from one another, the extensions having a length that protrudes from the support structure. Light sources are coupled to the extensions such that the light sources are positioned to irradiate a scalp. Sensors are coupled to the extensions, the sensors being positioned at an angle to capture images of the scalp having been irradiated by the light sources.

Some embodiments are directed to an analysis unit for assessment of hair condition, including a map processor configured to at least: obtain a first follicular map representing a first plurality of hair root positions in a first videodermoscopy image, obtain a second follicular map representing a second plurality of hair root positions in a second videodermoscopy image, determine a common skin area from the first follicular map and the second follicular map, relate hair root positions in the second follicular map to hair root positions of the first follicular map in the common skin area to determine a plurality of related hair root positions, and compare a change in condition of individual hair between the first and second videodermoscopy image to determine the analysis result suitable for assessment of hair condition.

Comprehensive systems and methods for managing hair loss are provided which enable an individual experiencing hair loss, and/or the person consulting him or her, to manage it and to determine and efficiently plan any appropriate treatment options. Management of hair loss may comprise quantifying hair loss, determining what hair growth stimulation product or treatment to adopt and the best timing for such products and/or treatments, and allowing to track and manage any progress of the selected hair growth stimulation product or treatment.

Disclosed herein are compositions including a topical agent that may be used to reduce and/or inhibit the effects of chemotherapy and/or radiotherapy, which can include reducing and/or inhibiting the effects of hair loss and/or hair shedding due to chemotherapy and/or radiotherapy. The topical agent can be hydrogen sulfide, a hydrogen sulfide donor, or a substrate for a hydrogen sulfide producing enzyme such as sulfanegen. Some embodiments of the composition can include the topical agent combined with an agent to promote vasoconstriction or the topical agent combined with an agent to modulate deposition, mode of action, and/or metabolism of a chemotherapeutic agent and/or a reactive oxygen species agent. Embodiments can be used for improving the outcome of a hair transplant surgery by optimizing a holding solution to stabilize hair follicle grafts. In yet another embodiment, a system for realizing hydrogen sulfide slowly into a holding solution is described.

In one embodiment, a hydration sensor or sensing element is configured to measure the hydration level of a user. The sensing element can include a water-permeable material positioned in between two water-impermeable material. The sensing element can be coupled to a bottle of fluid, or a carrier with a timer. The sensing element can be incorporated into a handheld device. The sensing element can be a disposable element, an element applicable for more than one-time use, or a re-usable element. The sensing element or sensor can be calibrated for a specific user or a group of users. One or more additional sensors that do not measure hydration level of the user can be coupled to a hydration sensing element to determine the amount of fluid consumption for the user in different conditions.

Methods and apparatuses are disclosed for capturing and analyzing images of human hair, particularly of a human scalp. Implementations described for capturing images at multiple locations on the scalp, detecting follicles and hairs, and generating a variety of measurements indicative of the condition of the hair, including the number and density of follicles, hair widths, inter-follicular distances, and the number of hairs per follicular unit, among other possibilities. Measurements can be compared among scalp locations, as well as among sequentially obtained images of the same location. A dermatoscope attachment for contact imaging of the scalp is also disclosed. The attachment may include polarizers enabling cross polarized imaging of the scalp.

The present invention is directed to a method for measuring scalp care agents on/in skin or other substrate comprising the following steps: selecting a location within the treated area on the skin or other substrate; irradiate treated area using an actinic radiation source; and measure a resulting fluorescent emission of the scalp care agent or a photoconverted scalp care agent using either the actinic radiation source or a second radiation source to excite the sample.

Some embodiments are directed to an analysis unit for assessment of hair condition, including a map processor configured to at least: obtain a first follicular map representing a first plurality of hair root positions in a first videodermoscopy image, obtain a second follicular map representing a second plurality of hair root positions in a second videodermoscopy image, determine a common skin area from the first follicular map and the second follicular map, relate hair root positions in the second follicular map to hair root positions of the first follicular map in the common skin area to determine a plurality of related hair root positions, and compare a change in condition of individual hair between the first and second videodermoscopy image to determine the analysis result suitable for assessment of hair condition.