How to Treat Split Nails
Tess Miller
Summary
- Learn the common causes and signs of split nails, from trauma to nutritional deficiencies.
- Discover proven home remedies and expert-backed treatments for stronger, healthier nails.
- Get practical prevention tips and product recommendations to avoid future nail damage.
Split nails can be frustrating, painful, and even a little embarrassing. Whether it's due to harsh weather, frequent hand washing, or an underlying health issue, nail splitting also known as onychoschizia is incredibly common. The good news? It’s treatable. In this article, we’ll cover what causes split nails, how to treat them at home, when to see a doctor, and how to prevent them in the future.
What Causes Split Nails?
Split nails typically occur when the nail plate becomes dry or damaged. Everyday habits can weaken your nails over time, leading to vertical or horizontal splits. Some of the most common causes include:
- Frequent exposure to water and harsh chemicals (like soaps, detergents, or cleaning products)
- Cold, dry weather that dehydrates skin and nails
- Nutritional deficiencies, especially in biotin and iron
- Physical damage (such as nail biting or using nails as tools)
- Underlying health conditions like hypothyroidism or anemia
- Natural aging, which reduces nail strength
According to a clinical study, about 20% of people experience brittle nails, which often leads to splitting. Women are especially prone to this, particularly with frequent manicures or acrylic use. If you're recovering from acrylic damage, check out this guide on How to Recover from Nail Damage After Acrylics or Gels for helpful tips.

Home Remedies for Split Nails
Before turning to expensive treatments, try these effective at-home solutions for mild to moderate nail splitting.
1. Keep Nails Moisturized
Dry nails are weak nails. Just like your skin, nails need regular hydration. Use hand creams with ingredients like urea, lactic acid, or lanolin. Natural oils also work wonders try:
- Coconut oil
- Jojoba oil
- Vitamin E oil
Massage the oil into your nails and cuticles every night to create a protective barrier and improve flexibility. For deep hydration, consider the remedy nude, a nutrient-rich treatment for dry, brittle nails.
2. Use Protective Gloves
One of the simplest ways to protect your nails is to limit exposure to water and chemicals. Wear rubber gloves when washing dishes or cleaning. If your job requires frequent handwashing, apply a thick hand cream afterward to lock in moisture.
3. Biotin Supplements
Biotin, a B vitamin, has been shown to strengthen nails and reduce splitting. A randomized trial found that taking 2.5 mg of biotin daily increased nail thickness by 25% after six months.
Always consult a doctor before starting supplements, especially if you're pregnant, nursing, or on medication. For more on nail-friendly nutrients, read Top 7 Nutrients for Healthy Nails (And the Foods You’ll Find Them In).
4. File Nails Properly
Instead of clipping, use a fine-grit nail file and move in one direction. Sawing back and forth weakens the nail. Keeping nails short also reduces stress from daily activities. Learn more in this guide: How to File Your Nails the Right Way for Strong and Beautiful Hands.
5. Avoid Nail Hardeners
Despite their name, nail hardeners can sometimes make nails more brittle. Many contain formaldehyde, which may provide temporary strength but leads to long-term damage. A clinical review advises against prolonged use of these products.
Shiny Top Coat – Protect your nails from daily wear and add a glossy finish while sealing in strength.

Medical Treatments for Severe Cases
If home remedies don’t help, or if splitting persists, a medical evaluation may be necessary. Chronic nail splitting can signal underlying health issues.
Blood Tests and Diagnosis
Doctors may check for iron deficiency anemia or thyroid problems. A study on nail abnormalities found that 30% of people with thyroid disease reported brittle, splitting nails as an early symptom.
Prescription Treatments
Dermatologists may recommend:
- Topical corticosteroids for inflammation
- Oral antifungals for suspected infections
- Prescription moisturizers or barrier creams
In rare cases, a nail biopsy or removal may be needed to rule out conditions like psoriasis or skin cancer.

Prevention Strategies
Preventing split nails is easier than treating them. Follow these steps to keep nails strong:
- Stay hydrated: Drink plenty of water and moisturize nails regularly.
- Eat a balanced diet: Focus on protein, omega-3s, and biotin-rich foods like eggs, nuts, and salmon.
- Limit manicures: Avoid gels and acrylics, which weaken nails with harsh chemicals.
- Avoid nail biting or picking: This damages the nail bed and increases splitting.
- Trim nails often: Shorter nails are less likely to catch and tear.
For a complete at-home solution, try the complete manicure kit nude, which includes everything needed for healthy nails.
Nail Polish Remover – A gentle, non-drying formula that effectively cleans polish without stripping natural oils.
Nail Strength Products: What to Look For
When shopping for nail strengtheners, look for these ingredients:
- Keratin
- Biotin
- Calcium
- Hyaluronic acid
- Panthenol
Avoid alcohol-based products or those with acetone, as they strip natural oils. For cuticle care, see The Ultimate Cuticle Care Guide: Do’s, Don’ts, and Must-Have Products.
FAQ
1. What vitamin deficiency causes split nails?
Biotin (vitamin B7) deficiency is the most common cause. Low iron and zinc levels can also contribute.
2. Can split nails be permanently fixed?
Most cases improve with proper care, but chronic conditions may require ongoing treatment.
3. Is nail splitting a sign of thyroid problems?
Yes, especially hypothyroidism. Persistent splitting may warrant a thyroid test.
4. How long does it take for a split nail to heal?
Fingernails take 4–6 months to fully regrow; toenails can take up to a year.
5. Are acrylic nails bad for split nails?
Yes. Acrylics weaken nails and expose them to drying chemicals, making splits worse.
With consistent care, you can restore your nails' strength and appearance. Split nails aren’t just a cosmetic concern; they can reflect your overall health. By giving them the attention they need, you’ll enjoy healthier, stronger nails in the long run.