As far as photosensitivity goes, I’ve found it useful to always have a pair of sunglasses in my car. I used to use SJW in the wintertime, when I don’t usually need sunglasses. But with SJW, a sunny winter day was too much for my eyes to drive relaxedly.
The photosensitivity is supposedly more pronounced in fair-skinned individuals. It stops when use of the herb is discontinued.