I read about this in the book Ecoholic Beauty & as I am always on the look-out for facial sunscreen that can be worn under makeup, does not make my skin oily, & is less toxic than most sunscreen, I decided to try it. It's a bit difficult to find--I've only seen it in The Big Carrot in Toronto, although I assume it must be in other health stores somewhere. It comes in a 2.5-oz tube & is expensive in-store--$35 plus taxes. By contrast, I used to use Aveeno Ultra-Calming Daily Moisturizer SPF30 & paid around $25 for the same size. But if you can afford Devita, it's worth every penny. This stuff is the least greasy of any facial sunscreen I've ever tried, the SPF is high enough, & it works. And there's the added advantage of knowing you're not smearing carcinogens on your face in an effort to avoid skin cancer (!). I use this 365 days a year & apply foundation on top of it. Once it soaks in, it's entirely invisible. No skin irritation at all. Highly recommended. FYI: if you can't stomach the in-store prices, try buying it online.