How Did We Get Here? The History of Skin Care Told Through Tweets

RoC Retinol Correxion Eye Cream

For a dependable retinol eye treatment that has withstood the test of time, may we point you in the direction of RoC's Retinol Correxion Eye Cream, a three-time Best of Beauty Award winner? Pure, stabilized retinol helps seriously relax any creases you may have and it's accompanied by an antioxidant-rich complex of zinc, copper, and magnesium, which Mona Gohara, M.D., associate clinical professor at Yale School of Medicine, told us aids in the formation of skin-plumping collagen.

"It is not only lightweight, fast-absorbing, and non-irritating, but it helped depuff my tired-looking eyes within a few days of use and has visibly smoothed out some of my milia," Allure senior commerce writer Sarah Han raves. The formula is notably housed in an opaque aluminum tube that blocks out light and oxygen to prevent the retinol from breaking down and losing its efficiency.

Best Retinol Serums:
Youth to the People Retinal + Niacinamide Youth Serum
Made with retinal, a vitamin A derivative that evens out the skin's texture, the Youth to the People Retinal + Niacinamide Youth Serum is a great "clean" pick in this category. The formula also holds niacinamide to minimize dark spots and adaptogenic mushrooms to smooth and replenish moisture in the skin.

Peace Out Retinol Face Stick

The convenience of the Peace Out Retinol Face Stick is why we love it. Packed into this easy-to-use stick is an effective three-percent blend of encapsulated retinol to soften fine lines, a blend of papaya and pumpkin enzymes to minimize pores, and bakuchiol to even out texture. We suggest taking it on the go with you for touch-ups throughout the day.

Farmacy 1% Vitamin A Retinol Serum
Farmacy's 1% Vitamin A Retinol Serum is made with a bunch of skin-loving ingredients that will have you seeing results fast. First on the list is retinal, which immediately delivers a tightness to the skin that works to improve texture. Next is retinol, to fight wrinkles and fine lines, and lastly Kalahari melon oil, to soothe and replenish moisture.

Trendy Skin-Care Ingredients Are Being Added to Hair-Care Products

We investigate the trend of skin-care ingredients being added to hair products — and asked dermatologists and cosmetic chemists which ones work.

Beauty elicits a deep, instinctive need to share — from an early age. In fact, we defy you to find a more generous creature than a 7-year-old with a sparkly, new lip gloss in her backpack. Cooties are damned, she will prettify every second grader in sight. And we get it: We've built careers on swapping beauty secrets (and, OK, maybe a glass or two).

We see this same communal spirit, shall we say, within the industry. Across brands and categories, this "borrowing" of ideas and technologies sparks trends and spawns knock-offs. Cosmetic ingredients flow freely, breaking all boundaries: Those once reserved for creams find their way into compacts. The same earthy clay and charcoal that purify pores can also whiten teeth and degrease roots.

And we're all for spreading the love — when the science is legit. But the latest take-over — hair-care companies co-opting buzzy skin-care actives, like peptides, stem cells, and antioxidants — has us questioning just how translatable such technology truly is. Are we going too far in attempting to "revitalize" something that's technically dead?

Meet the experts:

Randy Schueller is a cosmetic chemist and author based in Illinois.
Jim Hammer is a cosmetic chemist and the founder of Mix Solutions in Massachusetts.
Melissa Piliang, MD, a board-certified dermatologist with the Cleveland Clinic in Ohio.
Ni’Kita Wilson is a cosmetic chemist and vice president of product development at Ouai.
Ginger King is a cosmetic chemist and founder of Grace Kingdom Beauty.
Vivian Diller, Ph.D., is a psychologist based in New York City.
Rachel Anise is a communication studies professor at Golden West College in Huntington Beach, California.
Lindsey Bordone, MD, is a board-certified dermatologist in New York City.
Jeannette Graf, MD, is a board-certified dermatologist in New York City.
Krupa Koestline is a cosmetic chemist and founder of KKT Consultants.
Michelle Henry, MD, is a board-certified dermatologist in New York City.
Nicole Rogers, MD, is a board-certified dermatologist in New Orleans.
Francesca Fusco, MD, is an assistant clinical professor of dermatology at New York City's Icahn School of Medicine at Mount Sinai.