Hair contouring treatments using photoresponsive hydrogels

A hair contouring device, comprising:

• a contouring source, configured to generate contouring electromagnetic radiation within a first energy range to induce a conformation change of a hydrogel formulation;
• and
• a fixing source, configured to generate curing electromagnetic radiation within a second energy range to induce a photo-curing transition of the hydrogel formulation;
• an input component;
• control circuitry, electrically coupled with the contouring source, the fixing source, and the input component, the control circuitry being configured to receive an input from the input component and to control the contouring source or the fixing source in accordance with the input;
• a radiation sensor, electronically coupled with the control circuitry;
• and
• one or more non-transitory memory devices, electronically coupled with the control circuitry and storing computer-readable instructions that, when executed by one or more processors of the control circuitry, cause the control circuitry to perform operations comprising:
• generating a mapping of a biological surface using the radiation sensor, the biological surface comprising hair and the hydrogel formulation, the mapping describing a volume of the hair relative to the biological surface;
• generating a projection of a hair contouring design onto the mapping, wherein the hair contouring design defines a contouring treatment to be applied to the volume of the hair;
• and
• determining an exposure profile and an exposure duration using the projection
• exposing the volume of the hair to the contouring electromagnetic radiation using the contouring source in accordance with the exposure profile and the exposure duration;
• and
• exposing the volume of the hair to the curing electromagnetic radiation using the fixing source.