Section 111670 shall not apply to coal tar hair dye, that is conspicuously labeled as follows:
“Caution—this product contains ingredients that may cause skin irritation on certain individuals and a preliminary test according to accompanying directions should first be made. This product must not be used for dyeing the eyelashes or eyebrows; to do so may cause blindness.”
The labeling shall also bear adequate directions for such preliminary testing.
Source:
Section 111675, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=HSC§ionNum=111675..