Firmness and elasticity seem to be top of mind for many of us these days, and for good reason: even those who are aging proudly would admit that saggy skin is not a particularly welcome sight. For more on this topic, we interviewed Dr. Macrene Alexiades — the revered dermatologist with three Harvard degrees and one of the most enviable CVs in her field. She graciously provided her insights when she visited our San Francisco studio in November 2018, and we’ve been slathering on the 37Actives ever since.