By this time, you probably have skin care basics down pat. You know why it's important to cleanse and moisturize, you remove your makeup every night and never forget to wear sunscreen.

But once you hit your 50s, everything you thought you knew about your skin may get totally turned on its head. Thanks to hormone changes, accumulated environmental damage and your body's waning supply of collagen and elastin, a whole new batch of skin issues may rear their heads.

Fortunately, that doesn't mean you can't rock glowing skin past the half-century mark. Here are six rules you must follow for a gorgeous complexion in your 50s -- and beyond.

Just because you're seeing the signs of aging in your skin doesn't mean prevention is no longer important. Protecting against harmful environmental factors will help keep age spots, discoloration, wrinkles and lines from worsening, while preventing new damage. Fortunately, there's a serum that will help you turn back the clock by fighting these environmental threats and reducing the look of existing signs of aging.

Used daily and nightly, Elizabeth Arden's PREVAGE® Anti-Aging Daily Serum is clinically proven to guard against damage and correct existing skin woes. Featuring Idebenone, a powerful antioxidant, PREVAGE® helps to guard your skin from the sun, smoke and pollution by neutralizing free radicals, making skin appear smoother, firmer and more resilient in just a few weeks.

Most women enter menopause in their 50s, causing their bodies to produce much less estrogen, which can dry out skin. Compensate for your skin's moisture loss by incorporating hydrating ingredients during every step of your skin care routine.

If you use a foaming or soap cleanser, switch to cleansing oil, which removes dirt and makeup in one fell swoop and leaves skin extra-soft. Likewise, using soothing botanical oils (like chamomile and marula) to moisturize may calm the irritation that accompanies skin dryness.

Once you hit a certain age, you may notice your skin starts to lack its youthful bounce. That's because your body's natural supplies of collagen and elastin are dissipating, causing your skin to lose that firm, plump look, especially around your eyes and mouth. The fix: Use products with hyaluronic acid -- which draws water to the skin for a temporarily plumper look -- and retinol, which stimulates your skin to produce more collagen over time.

Over time skin begins to lose its natural glow, thanks to moisture loss and skin-dulling photo damage, like hyperpigmentation and fine lines. Your move? Avoid matte face, lip and eye makeup. Instead, fill your cosmetics bag with products that promise a luminous finish.

Matte products draw attention to flaws and emphasize dry, crepe-y areas on your face, whereas dewy makeup reflects light, diffusing the look of lines and imperfections. Slightly shimmery (not glittery) shades on the eyes, cheeks and lips can also make you appear more radiant.