For me, it's Drunk Elephant's Protini Polypeptide Moisturizer. Besides the occasional swap in the winter—or when I need to test something new for my role at Byrdie—this peptide-rich cream has ...

Drunk Elephant already had an award-winning vitamin ... "They are stable at a higher, less acidic pH (on par with a moisturizer), which is much easier to formulate. Plus, they have a much slower ...