I think out of all the colours for highlighters, white can often be the most problematic. Whites are prone to looking chalky, too stark/harsh and unnatural. This can also be accompanied by an overly shimmery/frosty finish.
I decided to compare the much rated Becca Shimmering Skin Perfector in Pearl against my favourite liquid highlighter formula, Rouge Bunny Rouge Highlighting Liquid Seas of Illumination in shade Sea of Clouds ( a shade I'd not tried before).
As soon as I swatched these for the photos I thought the Becca would be the one to win out. Hopefully you can see below that the Becca (on the left) looks like it has a sheen, whereas the RBR is noticeably more shimmered.
Blended out a bit
Once on my face and it was a different story. The Becca does indeed give a sheen to the skin, instead of shimmer. However I find it somewhat overpowering and felt it made my skin look too slick/shiny.
The RBR by contrast imparts a slightly shimmered pearly glow and gives a touch of brightness to the skin and is definitely my favourite of the two.
Both products blend in really well and have very good wear, in terms of texture the RBR has a much lighter consistency compared to the Becca. I have not experienced breakouts from either.
The RBR sample I ordered from Zuneta, they have a fantastic sample service on their site (including foundation), this is a great way to see if the product/shade is right for you before committing to a full size . The Becca was a sample from the lovely Jane from modestybrown