Two fingers to sun damage...Did you know that you need two fingers worth of SPF on your face all year round? ⁠ ⁠ Exposure to UV radiation is one of the key factors responsible for premature aging. Visible signs of aging include wrinkles, sagging skin, age spots and dryness, and loss of fatty cells causing the skin to lose its natural smoothness⁠ ⁠ So, remember that two fingers of SPF a day keep the fine lines and wrinkles away!