I have been trying out the Rare Beauty Positive Light Undereye Brightener for the last few weeks. Sheer to light-medium coverage, natural look, very hydrating instantly brightens undereye area, can be used as a highlighter also. I was surprised by how hydrating it is as both the bases from the brand clung to my dry patches but this was fine even on my very dry & dehydrated under eyes. My shade should be light as I’m 160 and 16C in the foundation and tinted moisturiser but I could use the 3 lightest shades. Light gave me that super bright undereye which personally I don’t like on me, light medium was better covered my blue circles but still brightened, but the medium shade gave me the best coverage it’s more yellow based so corrected my blue colour and once blended still looked natural. It can be worn over concealer but I could not make it work over mine so I used it alone. Some cons it’s possibly too hydrating for an oily skin type, coverage is low and it takes some time to find the best application method, most of the negative reviews were saying it’s not a good concealer but it’s not marketed as one more a brightener/ highlighter. Well worth a look if you need a hydrating, sheer coverage, radiant finish brightener.