Obey Tint Law
California window tinting law:
Windshield
allowed 4 inches of the windshield at the top
Front side Windows
70% light transmittance (factory tint look)
Back side Windows
allowed any darkness
Rear Window
allowed any darkness
New Window Tinting Law in California
AB 1303 allows drivers with a skin condition with a legitimate note from their dermatologist to tint their car windows. (Jan. 3, 2018)