
Green nails, also known as greenies, are a common bacterial infection caused by Pseudomonas aeruginosa, a bacteria found in fresh and salt water. It can occur when wearing acrylic nails or gel polish, as well as on natural nails. While it may be unsightly, it does not usually cause any health problems and can be treated easily. So, can you put gel polish over green nails? Yes, you can put gel polish over green nails as a temporary solution to disguise the discolouration. However, it is important to address the underlying cause, which is often a bacterial or fungal infection. This can be done by keeping your hands and feet clean and dry, and ensuring that any enhancements are properly removed and the natural nail is allowed to heal.
| Characteristics | Values |
|---|---|
| Cause | Fungus accumulates under an acrylic nail |
| Colour | Dark green or black |
| Bacteria | Pseudomonas aeruginosa |
| Bacteria Source | Fresh and salt water, commonly found around swimming pools, hot tubs, bathtubs and showers |
| Bacteria Environment | Damp places with no fresh air circulation |
| Treatment | Over-the-counter products, keeping hands and feet clean and dry, removing false nails carefully |
| Prevention | Washing hands thoroughly, disinfecting manicure equipment |
| Healing Time | A few weeks to a few months |
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What You'll Learn
- Green nails are caused by a bacterial infection called Pseudomonas aeruginosa
- This bacteria thrives in damp, moist environments with no air circulation
- To prevent green nails, ensure hands are washed and manicure equipment is disinfected
- Treatment for green nails involves removing nail enhancements and keeping the nail dry
- Over-the-counter products are available, but they must be used carefully and according to instructions

Green nails are caused by a bacterial infection called Pseudomonas aeruginosa
Green nails, also known as chloronychia or green nail syndrome (GNS), are usually caused by a bacterial infection called Pseudomonas aeruginosa. This bacterium is the most common cause of bacterial nail infections and can lead to a green discolouration of the nails, often affecting just one or two nails. The discolouration can range from yellowish-green to brownish-green, bluish-green, or even black-green.
Pseudomonas aeruginosa is typically found in wet environments and can cause various mild cutaneous infections, including green nail syndrome. The syndrome is characterised by greenish chromonychia, which is caused by pyocyanin, a metabolite produced by the bacterium. In addition to the discolouration, GNS can also present with proximal chronic paronychia and distolateral onycholysis.
While GNS is usually restricted to one or two nails, it is important to address the infection promptly. Treatment options may vary, and in some cases, it can take several months for the nails to return to their original appearance. In rare instances, the nails may not look the same as before the infection.
To prevent the spread of the infection, it is recommended to avoid trapping moisture, as this can create an ideal environment for the bacteria to thrive. Additionally, disinfecting and filing the nail bed can help manage the infection. In some cases, topical treatments, such as nadifloxacin, a medication typically used for acne, have been found effective in treating GNS.
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This bacteria thrives in damp, moist environments with no air circulation
Green nails, or "greenies", are a common bacterial infection caused by a bacteria called Pseudomonas aeruginosa. This bacteria thrives in damp, moist environments with no air circulation—specifically, in small gaps between the natural nail plate and artificial enhancements, where moisture accumulates. This is similar to how moss grows in a fish tank if it is not regularly cleaned out.
Pseudomonas aeruginosa is commonly found in fresh and saltwater environments, particularly around swimming pools, hot tubs, bathtubs, and showers. When nails are exposed to these environments, the bacteria can accumulate under the nail, causing a greenish discolouration. This discolouration can be unsightly, but it is important to note that Pseudomonas aeruginosa does not typically cause any health problems and is not often a cause for concern.
To prevent "greenies", it is crucial to ensure that hands are thoroughly washed and that all manicure equipment is correctly disinfected or disposed of. Additionally, it is important to avoid trapping moisture under the nail, as this creates an ideal environment for the bacteria to grow. This can be achieved by properly applying and removing nail enhancements and allowing the nail to heal before applying any new enhancements.
If "greenies" occur, the treatment is straightforward. Any enhancements should be removed, and the affected nail should be kept dry to prevent the further spread of bacteria. The discolouration may take months to grow out, and in some cases, the nails may not return to their original appearance. Over-the-counter products are available to treat the infection, but these should be used carefully and according to the instructions on the label.
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To prevent green nails, ensure hands are washed and manicure equipment is disinfected
"Greenies", or Pseudomonas nail infections, are caused by bacteria that thrive in warm, damp, and nearly oxygen-free environments. This often occurs when bacteria-laden droplets get trapped in your nails after contact with water or soil.
To prevent green nails, it is important to ensure that your hands are washed and manicure equipment is disinfected. Here are some detailed steps to follow:
Wash Your Hands:
- Wash your hands frequently with water or use an alcohol-based sanitizer to keep bacteria at bay.
- Dry your hands thoroughly after cleansing. Removing moisture is crucial to preventing the growth of Pseudomonas bacteria.
- If you have naturally oily nail beds, consider using a dehydrator to further remove moisture.
Disinfect Manicure Equipment:
- Disinfect your nail tools regularly, including nail clippers, files, buffers, and polish brushes.
- Use a professional disinfectant after each use, such as barbicide.
- Dispose of any disposable tools, such as nail files and buffers, that may have been contaminated.
Nail Care:
- Keep your nails dry and clean. Avoid prolonged exposure to water.
- Use a nail oil or serum that repels moisture and nourishes your cuticles.
- Ensure proper nail preparation before applying any nail enhancements to prevent bacterial contamination.
By following these steps, you can effectively prevent green nails and maintain healthy and beautiful nails.
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Treatment for green nails involves removing nail enhancements and keeping the nail dry
Green nails are often the result of a bacterial or fungal infection. This can be caused by trapped moisture underneath acrylic nails or gel polish. It is also a common issue for those who work with water or chemicals, such as homemakers, barbers, nail salon technicians, dishwashers, janitors, bakers, and medical personnel.
To treat green nails, it is important to remove any nail enhancements, such as acrylic nails or gel polish, to prevent further trapping of moisture, which can exacerbate the infection. Once the nail enhancements are removed, the nails should be trimmed, and it is crucial to keep the nails dry to inhibit the growth of bacteria or fungi. Home remedies such as vinegar (acetic acid) soaks or diluted chlorine bleach solutions can be tried, although their effectiveness is not proven.
Topical antibiotics or antifungals, such as fluoroquinolones or aminoglycosides, can be applied directly to the nail bed to treat the infection. For more severe infections, oral antibiotics or antifungals may be necessary. In some persistent cases, nail avulsion, or the removal of the nail, may be required as a last resort.
It is important to allow the nails to heal completely before applying any nail enhancements or polish again. During the healing process, it is recommended to wear gloves when doing tasks that involve water or chemicals to prevent further infection and to keep the nails dry. This healing process can take anywhere from 6 to 18 months, and in some cases, the nails may not return to their original appearance.
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Over-the-counter products are available, but they must be used carefully and according to instructions
Green nails are often an indication of a bacterial or fungal infection. While over-the-counter products are available to treat such infections, they must be used carefully and according to the instructions provided. For example, Ciclopirox topical solution is a common medication used to treat fungal infections of the fingernails and toenails. It belongs to a class of medications called antifungals and works by inhibiting the growth of nail fungus. When using Ciclopirox, it is important to follow the directions on the prescription label carefully. This includes properly trimming your nails before treatment and applying the solution evenly to all affected nails, including the underside of the nail and the surrounding skin. It is typically applied once daily, preferably at bedtime, to establish a consistent routine. Additionally, it is crucial to inform your doctor or pharmacist about any other medications, vitamins, or supplements you are currently taking to ensure safe usage and avoid potential side effects or interactions.
Another important consideration when using over-the-counter products to treat nail infections is to practice proper nail care and hygiene. This includes regularly disinfecting and filing the nail bed to promote healing. It is also recommended to wear gloves when performing tasks that involve water exposure, such as cleaning or doing the dishes, to prevent moisture from becoming trapped and fuelling the infection. While waiting for the infection to clear, you can paint over your nails with nail polish to hide the discolouration. However, it is important to avoid trapping moisture, which can aggravate the infection.
It is worth noting that the healing process for green nails can take a significant amount of time, ranging from 6 to 18 months. During this period, it is generally advised to refrain from getting manicures or applying acrylic nails until the infection has completely resolved. Additionally, some individuals may find that their nails do not return to their original appearance even after the infection has cleared. As an alternative to over-the-counter treatments, some people opt for home remedies to address nail fungus. For instance, sodium bicarbonate (baking soda) has been found to limit the growth of common fungi responsible for nail infections. Similarly, sunflower oil exhibits antifungal properties and has been shown to be effective against yeasts that cause foot fungus.
In conclusion, while over-the-counter products offer a convenient option for treating bacterial or fungal nail infections, they should be used with caution and in accordance with provided instructions. Proper nail care, hygiene, and patience are crucial during the healing process. If you have any questions or concerns about the products or their usage, it is always best to consult with a healthcare professional or a qualified nail technician.
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Frequently asked questions
Green nails are caused by a common bacterial infection called Pseudomonas aeruginosa, which is found in fresh and salt water, especially in areas with poor air circulation like swimming pools, hot tubs, and bathtubs.
To get rid of green nails, you should remove any nail enhancements and keep your nails dry to prevent the further spread of bacteria. Over-the-counter products are available, but it's important to follow the instructions carefully. Keeping your hands and feet clean and dry will also help stop fungal growth.
While it is possible to paint over green nails with gel polish, it is recommended to wait until the infection is completely gone and the nail is healed before applying any polish. Exposing the nail to air will help the bacteria die, and you can speed up the process by filing and disinfecting the nail bed.











































