Why is there a green spot on my nail after removing acrylics?

Reviewed by Yoshinori Abe, MD

Internal Medicine

A green spot on your nail after removing acrylics is often a sign of Green Nail Syndrome (chloronychia), a bacterial infection typically caused by Pseudomonas aeruginosa. This bacteria thrives in moist environments trapped between the natural nail and acrylic, producing a distinctive green, blue-green, or dark pigment. While usually not serious, the discoloration can persist for weeks and may require treatment to fully resolve.

Because nail discoloration can also point to fungal infections, trauma, or other underlying issues, it's worth understanding exactly what you're dealing with before it worsens. Take a free, instant, online symptom check to get clarity on your symptoms and confident next steps—all in just a few minutes, from the privacy of your phone.

Reviewed for medical accuracy: 07/15/2026

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Explanation

When you see a green spot on your nail after taking off acrylics, it could be due to a condition known as Green Nail Syndrome. This is often caused by a type of bacteria that likes to grow in damp places. When you have acrylic nails, moisture can get trapped between the acrylic and your natural nail, creating a perfect environment for these bacteria to grow.

What Happens:

Trapped Moisture: Acrylic nails can trap moisture between the acrylic and your natural nail.
Bacterial Growth: This moisture allows bacteria to grow, sometimes leading to a greenish color on the nail.

What You Can Do:

Keep Nails Dry: Make sure your nails are dry and clean to prevent bacteria from growing.
See a Professional: If the green spot doesn't go away or you're experiencing other symptoms, you can use our free AI symptom checker to better understand what might be happening and determine if you need medical attention.

Remember, while acrylic nails can be fun, it's important to take care of your natural nails too!

(References)

Carhart P, Espinosa J, & Lucerna A. (2024). A Case of Green Nail Syndrome Diagnosed in the .... Cureus, 11047019.
Reinecke JK, & Hinshaw MA. (2020). Nail health in women - PMC. International Journal of Women's Dermatology, 7105659.
Kim S, Day CM, Song Y, Holmes A, & Garg S. (2023). Innovative Topical Patches for Non-Melanoma Skin Cancer. Pharmaceutics, 10674480.

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