This seems to be only the qualities you need - protection - and almost none of the typical downsides of slimy, overly perfumed and noticeable. It's changed my habits on using sunscreen for the better. If I thought I could get away without burning, I wouldn't use the other stuff, or I'd shift my rides from the center of the day to reduce exposure. Zealios Sun Barrier has lowered my objections so that I'm finding myself using it on a regular basis and am willing to take those mid-day rides. Just be sure not to miss a spot. I burned and peeled in a 1 cm^2 area on my face that I missed. The rest of me was well protected. I am a believer and now a repeat customer.
I've been using Zealios sunscreen for about a year now and am reluctant to try anything else. It goes on really easily and dry, and does not leave my oily after application. Most sunscreens make me too slimy for on the bike use, and are generally not enjoyable to use, but I've found Zealios to not even be noticeable once on. As far as actual sun protection, it seems to do the job since I don't get sunburns, but not sure if it's any better than anything else that is out there.