1. Form HSMV 83390, Application for Sunscreening Medical Exemption, accurately completed. In most cases, you will need to fill out a vehicle tint-waiver request form — or some form along those lines — depending on where you reside.You must have a sticker on the inside door jamb of the driver's side, identifying the legality of your tinting. Obtain a signed statement from a licensed physician validating the need for darker window tints. Before a window tint medical exemption can be made and a darker window tint can be installed, you must have a medical exemption certificate.