Pamela Anderson’s Baywatch days may be behind her, but there’s no doubt that the actress’ skin is just as bright as her time spent beach-side, running in slow motion. Whether posing on the red carpet or sharing make-up-free photos on Instagram, the 55-year-old has a luminous complexion—which leads us to wonder, what exactly is her secret? The Love, Pamela author recently revealed just how she achieves an always-radiant, youthful appearance in a new interview with Elle. The one thing she says is the most important? Always keeping your skin well-hydrated. “Moisture is the best anti-aging trick,” she told the outlet. “I use a humidifier in dry climates, and a healthy…