Abstract: A process for water-proofing devices from the inside out, the process is suited for application to completely fabricated electronic devices to enable them to be used with full functionalities in and under the water and in a variety of aquatic environments, shockproof and corrosion resistant. Multilayer technology fills empty spaces in the electronic device with a first layer of a hydrophobic medium like silicone and then a second layer of an anti-corrosive agent. Creating a vacuum removes air from the insulating mediums, slowly eliminating the vacuum to allow air to push the mediums into the device's internal voids, and then curing while preserving button functionality and patency of electronic pathways.