Did you know that stage lights have the same effect on skin as intense sun exposure? Hilary Duff's makeup artist, Kelsey Deenihan Fisher, was aware of this, which is why she slyly incorporates SPF into the singer's tour looks. For Duff's "Small Rooms, Big Nerves" show in Los Angeles, Fisher boosted her glow with the Naked Sundays Cabana Glow Mineral Glow Serum Drops SPF 50, a hybrid product that offers impressive sun protection.