Beauty

TikTok Is Obsessed with Blue Nail Theory—But I'm Calling B.S.

Can it really signify relationship status?

Chelsea Candelario

By Chelsea Candelario

Published May 12, 2025

blue nail theory a photo of blue nail polish, a couple and nails

Listen, the nail theories are fun, but they are out of control. We’ve explored the entire color wheel, and now, there’s supposedly another shade that can psychoanalyze your love life from across the room. While the white nail theory hints that its wearer is single and ready to mingle, the blue nail theory implies that if your donning the color, you're taken. So, I decided to tap a manicurist and a relationship expert to see if this theory is worth investing in. 

Meet the Experts

  • Lily Nguyen is a celebrity nail artist and founder of Labo Beauté. With a career spanning in high fashion, film and editorial, her work has been featured in Vogue China, Adidas campaigns, and numerous films and reality TV shows. 
  • Dr. Joy Berkheimer, PhD, is a licensed marriage and family therapist, sexologist, and founder of Renew Yourself With Joy LLC. As the creator of the Glow Your Goddess®, she blends her expertise in therapy, shadow work, coaching and intuitive healing to help clients thrive. She also currently serves as the Chief Sexologist at The Sexual Wellness Awards. 
Beauty and Cultures Editor

Chelsea Candelario

Beauty and Cultures Editor

  • Writes trend stories, product reviews and how-tos across beauty, cultures, fashion and entertainment
  • Six years of experience as a Beauty Editor
  • Studied journalism with a minor in creative writing at SUNY New Paltz

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