My Nana’s Trick for Thick Toenails — What Actually Helps?

Thick, rough, or discolored toenails can be frustrating, and many people turn to traditional home remedies for a quick cosmetic fix. But when a toenail becomes noticeably thicker, it’s important to consider why it changed rather than simply trying to thin it.

One common cause is fungal nail infection (onychomycosis). It can make toenails thicker, brittle, discolored, and sometimes crumbly. However, nail trauma, psoriasis, and other nail conditions can look similar, so appearance alone cannot confirm a fungal infection. (nhs.uk)

A Simple Way to Make Thick Nails Easier to Trim

If your toenails are simply difficult to cut because they are thick, the American Academy of Dermatology recommends soaking the feet in warm salt water for 5–10 minutes before trimming. This can soften thick nails and make routine nail care easier. (Académie Américaine de Dermatologie)

How to Do It

1. Fill a basin with comfortably warm water.
2. Add about 1 teaspoon of salt per pint of water.
3. Soak your feet for 5–10 minutes.
4. Dry your feet thoroughly.
5. Trim the toenails straight across, rather than cutting deeply into the corners.
6. Keep nails reasonably short, but avoid cutting into the surrounding skin. (Académie Américaine de Dermatologie)

But This Does Not Cure Toenail Fungus

This is the important part that viral posts often leave out.

Soaking or filing a thick nail can make it easier to manage, but it does not eliminate a fungal infection. Dermatologists note that fungal organisms can live within the nail and tissue underneath it, so simply scraping or filing the nail cannot remove the infection. (Académie Américaine de Dermatologie)

If a nail is thick, yellow or white, brittle, lifting, or becoming increasingly distorted, a pharmacist, doctor, dermatologist, or podiatrist can help determine the cause. Fungal infections may require antifungal treatment, and treatment can take months because the damaged nail has to grow out. (nhs.uk)

Keep Toenails Healthy

• Keep feet clean and dry.
• Change socks daily.
• Wear shoes that fit properly and allow airflow.
• Avoid sharing nail clippers or other nail tools.
• Wear sandals in communal showers and pool areas.
• Keep toenails trimmed straight across. (Académie Américaine de Dermatologie)

When to Get It Checked

See a healthcare professional if a nail changes color or shape without an obvious reason, becomes painful, separates from the nail bed, or the surrounding skin becomes red, swollen, or warm. People with diabetes or circulation problems should be especially careful with foot and nail problems. (nhs.uk)

So Nana’s trick may help soften a thick toenail before trimming—but if the thickness is caused by fungus or another nail condition, treating the underlying cause is what matters most. (Académie Américaine de Dermatologie) 