"This little guy is a true all-in-one: it combines stable vitamin C with SPF 40, plus two percent niacinamide to help even out skin tone. I'll admit, I was a bit worried that it would feel greasy going on — a serum mixed with sunscreen could be a tricky consistency to nail. However, Supergoop! Daily Dose Vitamin C + SPF 40 Sunscreen Serum PA+++ ($46) goes on smoothly and absorbs within about a minute, leaving my skin with a nice, dewy finish. Plus, since I've been using it, I've spent, um, a lot of time in the sun, and I can report back that I've gotten a total of zero burns or redness, and it's helped keep those areas of hyperpigmentation under control and not continue to darken. So simple, yet so effective — just how I like it." — Aviel Kanter, associate director, Branded Content
If you want to read more, here is the complete Supergoop! Daily Dose Vitamin C + SPF 40 Sunscreen Serum review.