WHY I LOVE IT:
This serum has a cult following, and for good reason. It’s one of the first and best topical vitamin c serums, using a once-patented formula that combines 15% vitamin c with vitamin e and ferulic acid. This serum is one of the most transformative products I’ve used, despite its unpleasant smell (bad enough to be worth noting). Astoundingly effective for brightening, evening out skin tone, and protecting the skin from external aggressors and damage.