Few skin-care brands are as coveted as Sisley-Paris. The French skin-care retailer is the definition of luxe, winning the hearts of derms since the '50s for its je ne sai quois on the skin. It's effective alright, but it's not cost-effective—scour the Sisley-Paris website and you'll be hard-pressed to find a serum or toner for under $200. Le sigh. It's our lucky day, because Sisley-Paris Sisleÿa Radiance Anti-Aging Concentrate ($262) is on sale at Nordstrom right now, down from its original, hefty price tag of $525 to $262. This is your sign to run—no, sprint—to Nordstrom to nab a bottle before the sale ends February 27. Or before the product sells out, which is probably will.

Few skin-care brands are as coveted as Sisley-Paris. The French skin-care retailer is the definition of luxe, winning the hearts of derms since the '50s for its je ne sai quois on the skin. It's effective alright, but it's not cost-effective—scour the Sisley-Paris website and you'll be hard-pressed to find a serum or toner for under $200. Le sigh. It's our lucky day, because Sisley-Paris Sisleÿa Radiance Anti-Aging Concentrate ($262) is on sale at Nordstrom right now, down from its original, hefty price tag of $525 to $262. This is your sign to run—no, sprint—to Nordstrom to nab a bottle before the sale ends February 27. Or before the product sells out, which is probably will.

If you’re experiencing super dry skin (like finding yourself packing on moisturizer and picking off flakes from your face) and you’re wondering what might be the cause— look no further. While many of us have naturally dry skin, (and skin that dries more as we age), one reason why our faces can feel so coarse is due to not hydrating enough! Water is crucial for every function your body has, and glowing, healthy and radiant skin is impossible without it.Another way to hydrate your skin this winter (apart from drinking ample amounts of water and moisturizing daily) is making sure that your diet is balanced and nutrient-rich.

It's important to start low and go slow, note our dermatologists. For beginners, most dermatologists recommend a retinol with a concentration of 0.25 percent to one percent to see results. If your skin is not sensitive, you can usually tolerate something right in the middle; Dr. Sethi starts her patients on a 0.5-percent concentration of retinol, which is suitable for most skin types, she says. Dr. Ciraldo cautions against starting with anything higher; a very concentrated dose is likely to cause side effects.

For beginners, most dermatologists recommend a retinol with a concentration of 0.25 percent to one percent to see results. If your skin is not sensitive, you can usually tolerate something right in the middle; Dr. Sethi starts her patients on a 0.5-percent concentration of retinol, which is suitable for most skin types, she says. Dr. Ciraldo cautions against starting with anything higher; a very concentrated dose is likely to cause side effects.

You all know by now that your skin care routine should be tailored to address the needs of your specific skin type, but your skin care considerations shouldn’t end there. Your skin tone also plays an important factor when choosing the right products and ingredients in your beauty regimen. And those with a deeper complexion or melanated skin may find that their skin requires special attention in certain areas.

Hitting the big 4-0 is a major accomplishment and something to celebrate with self-care. If you want to preserve your youthful glow with a consistent skincare routine, another important part of caring for aging skin is your diet. We spoke with skincare and health experts about the one food many people are aware of that is bad for the skin and another that you might not expect.