1. Acoustically-activated cosmetic hydrogels
US Patent 10,058,490
Application No 14/582,816
Granted 28 August 2018
Assignee L’Oréal
The patent describes a composition that includes an aggregate that changes structural shape when exposed to acoustic energy. The aggregate has a core and a shell. The core of the aggregate includes a hydrogel formed of hydrophilic substances that can absorb a relatively large amount of water.