Noah Sinclair
Urea is a waste product created by the liver and removed by the kidneys. It is also a naturally occurring humectant in the skin that helps to retain moisture. Urea is used to treat a variety of dermatological conditions, including dry skin, eczema, and psoriasis. It is also used to soften and remove damaged or diseased nails, particularly in cases of onychomycosis, a common fungal infection affecting the nail plate. The duration of urea treatment for nail removal varies depending on the treatment regimen and patient characteristics such as age. Daily application of urea ointment with sealing resulted in an average time to nail removal of 18.7 days, while application once every three days reduced the time to 12.7 days. Weekly application of 40% urea and 1% bifonazole has been found to lead to earlier nail removal in onychomycosis, with avulsion typically occurring within two weeks.
| Characteristics | Values |
|---|---|
| Urea Concentration | 40% |
| Treatment Regimen | Daily, every 3 days, or once a week |
| Average Time to Nail Removal | 18.7 days, 12.7 days, and 11 days, respectively |
| Age Impact | Increase in age of 1 year increases time to nail removal by 0.128 days |
| Elderly Patients | Average treatment duration of 12.85-19.42 days |
| Onychomycosis Treatment | Used in conjunction with 1% bifonazole |
| Nail Preparation | Soak in warm water for 10 minutes, trim, and scrape |
| Post-Removal Treatment | Treat nail bed with topical antifungal agents |
| Advantages | Reduced risk of bacterial infection, no anaesthetic required, relatively painless |
| Side Effects | Minor redness and tingling at the application site |
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What You'll Learn
- Urea is a waste product created by the liver and removed by the kidneys
- It is used to treat onychomycosis, a chronic fungal nail infection
- Urea damages nail protein structures, softening the nail
- It is more effective on fungally-infected nails than healthy nails
- Urea can be used in conjunction with an antifungal treatment
Urea is a waste product created by the liver and removed by the kidneys
Urea is also used in dermatological disorders, specifically to soften rough, dry, or thick skin caused by skin conditions such as eczema, psoriasis, keratosis, and pityriasis rubra pilaris. It is also used to soften damaged fingernails or toenails so they can be removed without surgery.
Onychomycosis is a chronic nail fungal infection that results in nail damage. A combination of urea and bifonazole removes fungally infected debris, facilitating nail removal and increasing the efficacy of antifungal treatment. The compound damages the structure of the proteins in the nail by compromising hydrogen bonds and softening the nail by hydration, thus reducing its tensile strength.
The time taken to achieve nail avulsion depends on the frequency of application and the age of the patient. Daily application of the ointment resulted in an average time to nail removal of 18.7 days, whereas application once every three days resulted in a faster removal time of 12.7 days. Application once per week resulted in the fastest removal time of 11 days. Patients aged 60 and over had longer treatment durations, which may be due to the thickening of toenails with aging, making it more difficult to remove them.
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It is used to treat onychomycosis, a chronic fungal nail infection
Onychomycosis is a chronic fungal nail infection that causes nail damage and a decrease in quality of life. It is a common condition that often requires prolonged treatment regimens with low success rates.
Urea is a treatment option for onychomycosis. It is thought to improve the efficacy of topical and oral antifungal agents. Urea is a keratolytic agent that is used in the chemical avulsion of fungally infected nails. It damages the structure of the proteins in the nail by decreasing the hydrophobic effect, compromising the hydrogen bonds, and softening the nail by hydration, thus reducing its tensile strength and enabling its mechanical removal.
The standard treatment protocol for AGISPOR ONYCHOSET, an ointment containing 40% urea and 1% of the antifungal bifonazole, involves the patient soaking the nail in warm water for 10 minutes, trimming and scraping the fungally infected portions of the nail, applying the ointment, and sealing it with a bandage. The following day, the bandage is removed, the nail is soaked again, and the process of scraping, ointment application, and bandaging is repeated.
A retrospective cohort study on patients aged 18 to over 60 years visiting a clinic in Netanya, Israel, from 2009 to 2018 found that a weekly application of 40% urea and 1% bifonazole ointment led to earlier nail removal in onychomycosis. The average length of time for nail removal with daily application and sealing was 18.7 days, while application once every three days resulted in nail removal at 12.7 days. Age was the only factor that affected the duration of nail removal, with patients aged 60 and over having longer treatment durations due to thicker toenails.
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Urea damages nail protein structures, softening the nail
Urea is a keratolytic agent that is used in the chemical avulsion of fungally infected nails. It is also used to soften rough or dry skin caused by skin conditions such as eczema, psoriasis, keratosis, and others. Urea damages the structure of the proteins in the nail by decreasing the hydrophobic effect, compromising the hydrogen bonds and softening the nail by hydration, thus reducing its tensile strength and enabling its mechanical removal.
The process of using urea to remove nails involves soaking the nail in warm water for 10 minutes, trimming and scraping fungally infected portions of the nail, applying the ointment, and sealing it with a bandage. The following day, the bandage is removed, the nail is soaked again, and the process of scraping and reapplication of the ointment is repeated.
The frequency of ointment application and sealing affects the time it takes for the nail to be removed. Daily application of the ointment and sealing resulted in an average length of time to nail removal of 18.7 days, whereas application once every three days resulted in nail removal at 12.7 days, and once per week at 11 days. Age also affects the duration of nail removal, with older patients experiencing longer treatment durations.
Urea is available in different forms such as cream, gel, lotion, ointment, or nail lacquer, and it can be purchased in the UK and US at concentrations of up to 40%. It is important to note that urea is for external use only and should not be ingested. While it is effective in dissolving fungally-infected nails, it is less effective at removing healthy nails.
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It is more effective on fungally-infected nails than healthy nails
Urea is an effective treatment for onychomycosis, a chronic nail fungal infection that causes nail damage and decreases quality of life. The nail plate is predominantly composed of α-keratin proteins, which are organized into a structure mainly stabilized by hydrophobic connections, hydrogen bonds, and di-sulfide bonds. Onychomycotic nails are less dense and more porous than healthy nails, and the hydrophobic connections remain, preventing most topical onychomycosis therapies from penetrating to the sites of fungal infection.
Urea is a keratolytic agent that damages the structure of the proteins in the nail by decreasing the hydrophobic effect, compromising the hydrogen bonds, and softening the nail by hydration, thus reducing its tensile strength and enabling its mechanical removal. Urea is easily able to dissolve fungally-infected nails but is less effective at removing healthy nails. This is because the overlying nail plate is generally healthy, so the urea works less effectively.
The use of urea for the treatment of onychomycosis has been studied in various clinical trials. One study found that daily application of ointment and sealing resulted in an average length of time to nail removal of 18.7 days, while application once every three days resulted in nail removal at 12.7 days, and once per week at 11 days. Another study found that 86.3% of patients in the urea group achieved nail avulsion compared to 60.8% in the control group, with the use of urea once daily for three weeks before a topical antifungal therapy. A different study reported 100% successful nail avulsion after the application of urea with occlusion twice daily for one week, without the use of any antifungal treatment after nail avulsion.
Overall, the use of urea in the treatment of fungal nails is an attractive option, as compared to surgical removal, it can reduce the risk of bacterial infection, requires no anaesthetic, and is relatively painless. Urea is thought to improve the efficacy of topical and oral antifungal agents, making it a useful adjunct service in the management of fungal nail infections.
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Urea can be used in conjunction with an antifungal treatment
Onychomycosis is a chronic fungal nail infection that causes nail discolouration, nail plate hardening, crumbling, and hyperkeratosis of the nail bed. It is the most common nail disease globally, constituting 50% of all nail infections.
Urea is a treatment option for onychomycosis. It is a keratolytic agent that softens and hydrates the nail plate by denaturing nail keratin, enhancing drug penetration, and promoting the avulsion of affected nails. Urea is often used in conjunction with an antifungal treatment to improve the efficacy of the antifungal treatment.
The combination of urea and an antifungal agent is thought to increase the penetration and bioavailability of the antifungal agent. The urea damages the structure of the proteins in the nail by decreasing the hydrophobic effect, compromising the hydrogen bonds, and softening the nail by hydration, thus reducing its tensile strength and enabling its mechanical removal.
AGISPOR ONYCHOSET is a marketed ointment containing 40% urea and 1% of the antifungal agent bifonazole. According to the ointment's standard treatment protocol, the patient is required to soak the nail in warm water for 10 minutes, trim and scrape the fungally infected portions of the nail, apply the ointment, and seal it with a bandage. The following day, the bandage is removed, and the nail is soaked again, followed by scraping of fungal debris and reapplication of the ointment and bandage. This process is repeated daily.
A retrospective cohort study was conducted on patients visiting the "LEY HAYASMIN" clinic in Netanya, Israel, during the years 2009–2018. The study found that a combination therapy of urea, an antifungal agent, and a new sealing technique resulted in better and quicker results in the treatment of onychomycosis.
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Frequently asked questions
The time it takes for urea to remove a nail depends on the frequency of application. Daily application results in an average removal time of 18.7 days, whereas application every 3 days results in a removal time of 12.7 days. Application once a week results in the shortest removal time of 11 days.
Urea is a hydrating agent that attracts and holds water within the epidermis. It also unfolds skin protein structures, making them more vulnerable to degradation and exfoliation. Urea is used to soften damaged nails so they can be removed without surgery.
Above 25% urea, its action becomes more like salicylic acid and it can dissolve the harder keratin of nails. Urea at 40% is easily able to dissolve fungally-infected nails but is less effective at removing healthy nails.
Urea has been reported to have only minor side effects, such as redness and tingling at the point of application. It is important to note that urea should not be used on open wounds, burns, or areas of swollen skin. If urea gets into your eyes, nose, mouth, rectum, or vagina, rinse with water.
