Catharine Malzahn
Contributing beauty writer
Catharine Malzahn is a contributing beauty writer at Cosmopolitan and was previously the beauty assistant at Good Housekeeping, Woman's Day, and Prevention.

HBD! 15 Nail Designs Fitting to Make You the Center of Attention on Your Birthday
No matter what your sign is.
Jan 29, 2026

Wanna Learn How to Grow Your Hair Fast? Start With One of Our 11 Expert-Approved Tips
Rapunzel, Rapunzel, let down your hair.
Jan 26, 2026

Wanna Feel Like A Million Bucks? Try One of These Gold Nail Looks This Month
In the words of Harry Styles, āyouāre so golden.ā āØ
Jan 26, 2026

18 Eye Creams That Help Deflate Bags and Puffiness, Tested and Reviewed by Very-Tired Cosmo Editors
We asked dermatologists what ingredients actually work (and tried them for ourselves).
Dec 18, 2025

We Tested All of the Popular At-Home Gel Nail KitsāThese 10 Are Replacing Our Salon Visits
It's officially salon breakup season.
Dec 11, 2025

The Definitive Guide to Every Possible Way to Remove Hair on Your Face
From dermaplaning tools to electric shavers, youāll be as smooth as silk.
Dec 10, 2025
The 12 Best Round Brushes for Every Hair Type, Concern, and Style PreferenceāVetted By Cosmo Editors
It's the key to a salon-level blowout, btw.
Dec 3, 2025
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