"The Dermalogica Phyto-Nature Firming Serum ($145) is instant gratification with long-term results. The two-part liquid is housed separately in the bottle and pump out together to mix in your hands. Together, it gives my face an instant lifting effect thanks to the hyaluronic acid and caffeine in the formula and will firm my skin over time with the combination of peptides, vitamin c, and rockrose extract, which helps to neutralise free radicals that can harm the skin. It's comforting to know I'm protecting my skin from environmental aggressors while I'm living in over-polluted New York City."