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Nikolas Greenwald

Manager, Data & Product Operations

Nik (he/him) works across GH Institute Labs to develop testing protocols, analyze data, and build tools that support product evaluation. He also contributes editorial coverage on men’s beauty and audio, drawing on his background in chemical engineering and experience as a music producer and DJ. Before joining Good Housekeeping in 2022, Nik worked in the labs of MIT and Regeneron on projects ranging from chemical inventory and reporting to bioassay development.

Topic Specialties

Latest from Nikolas Greenwald

Two portable speakers, one blue with controls, and a yellow Bose speaker held in hand, set against a sale-themed background.

6 Top-Performing Speakers from Our Tests Are on Sale for Prime Day, Starting at $42

Our audio expert told me which speakers are worth buying today from Bose, JBL, and other popular brands.

Gray headphones with a sale tag against a purple dotted background and yellow sale banners.

These Headphones Performed Better Than Apple's in Our Tests. Now They're 40% Off for Prime Day

I’m a DJ and music producer, and these are my absolute favorite over-ear headphones.

Various wireless headphones and earbuds displayed against a gradient background.

The 7 Best Headphones of 2026, Tested by Audio Experts

Looking for better sound, stronger ANC or a more comfortable fit? These are our Lab-tested picks.

dehumidifiers displayed on a colored background

The Best Dehumidifiers to Reduce Humidity and Mold

These dehumidifiers will keep your home dry over the long haul.

Best Colognes for Fall

8 Best Colognes for Fall, According to a Fragrance Nerd

From viral TikTok favorites to underrated classics, these are the colognes I'm wearing this autumn.

person examining a cylindrical filter among air purifiers.

These Expert-Approved Air Purifiers Deliver Cleaner Air in Every Season

We tested 60 models to find the best options for removing dust, pollen, air, odors, and more.

Best Gifts for Gamers

25 Best Gifts for Gamers, According to Gamers Themselves

Gamers of all ages will love these gifts ranging from storage to merch and travel gear.

Green button with the text "READY??" and a hand cursor, set against a bright blue sky and grassy background.

The Age Rating Is Just the Beginning: A Parent's Guide to Buying Video Games

Age ratings aren't enough. Here's what experts say parents should know before buying a game.

Parent-Approved console games

These Kid-Friendly Console Games Are Actually Fun for the Whole Family

After testing 37 games for more than 5,300 hours, these are the titles that kept us coming back.

Three electric shavers displayed against a gradient blue background.

The Best Electric Razors for Men, Tested for a Close, Comfortable Shave

These are tops for a close, comfortable shave.

Three modern air purifiers set against a blue grid background.

The Best Air Purifier and Humidifier Combos, According to Our Testing

These top-rated multitaskers clean the air in your home while maintaining healthy humidity.

best air purifier for smokers

6 Best Air Purifiers for Smoke That Actually Help Clean the Air

Our top picks will help clear the air of smoke from wildfires, cooking fumes, cigarettes, and other sources.

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