Siena Gagliano
Associate Editor
Siena Gagliano is the associate editor at Cosmopolitan, where she primarily covers beauty, fashion, travel, and lifestyle. Wanna know how to get the best brows of your life? gotchu. What about how to find the best fashion deals of the season, the softest sheets on the market, or exactly how to use retinol without irritating your skin? Check, check, and check. Before joining Cosmopolitan, Siena was a writer at Bustle and several other media outlets. As her 2024 goal, she has vowed to find the best (extra) dirty martini NYC has to offer—and yes, that means ~attempting~ to try every cute cocktail spot in the city (hit her up with some recs, pls). Follow Siena on Instagram for a behind-the-scenes look at that magazine life.
- Topic Specialties
Latest from Siena Gagliano
Itchy Scalp? These 7 Scalp Oils Instantly Moisturize and Rebalance
Sweet, sweet relief is right this way.
I Am Rethinking All the Expensive Eyeliners I Own Since Trying These Drugstore Ones
FWIW, I’m a self-proclaimed smokey eye expert.
These Are the Only Self-Tanners I’ll Recommend to Someone With Fair Skin
They’re all tried and tested by Cosmo editors.
What Shower Steam Really Does to Your Hair
I asked a trichologist to explain what happens—and if steam is ultimately good or bad for your hair.
A Full Guide to Removing Waterproof Mascara Without Scrubbing Your Eyes, According to a Dermatologist
Step 1? Put down the washcloth.
What Causes Gray Hair in Your 20s—and Can You Reverse It? A Dermatologist Explains
It’s more common than you think.
Mineral vs. Chemical Sunscreen: Which SPF Is Actually Better for Your Skin?
I asked three expert dermatologists to settle the debate, once and for all.
9 Best Razors for Sensitive Skin, Tested by Editors and Approved by Experts
Say goodbye to redness, itchiness, and ingrowns.
The 7 Best Boar Bristle Brushes for Smooth and Slicked-Back Hair
Keep reading if you want the smoothest hair ever.
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