"I'm wearing far less makeup and avoid powders these days -- they make me look older now when I wear them," says Kunin, who is 50 years old. "I use sunscreen, the Dermadoctor KP Moisturizer, $36 on my face [it's technically a body product], NARS blush in Orgasm, $24, do a little lips and eyes and leave it at that," she says.

"Have sex" was one of a laundry list of recommendations Wechsler makes when explaining what we all need to do to fight aging. We had to hear more. "The hormones released during and after sex are anti-inflammatory and combat the stress and aging hormones," she says.

Rodan sleeps on a Therapeutica Sleeping Pillow, $79.95 to make sleeping on her back easier. Why? "Your face is getting smooshed into the pillow [if you don't sleep on your back] and that deepens natural lines of expressions and creates new ones," she says.

"Be careful with salt and alcohol volume," Gross says. "Salt collects in the skin and brings water, which in turn causes puffiness. Alcohol causes blood vessels to become leaky, so the water exits skin, causing puffiness in delicate spots, like the under eye area," he adds.

"Use sunscreen. It is something that is key and something I use religiously," Rodan says. Use products containing "zinc or avobenzone" (try Rodan + Fields Soothe UVA/UVB SPF 15 Sunscreen, $36). "You need to make sure they are the called out ingredients in the active ingredient list or you're probably doing your skin more damage," she says. "People have a false sense of security with sunscreens. You need things that won't let UVA light get through or you will accumulate more UV damage. This explains why the rate of skin cancer and aging has continued and progressed even though we're wearing more sunscreen than before," Rodan says.