Toenail care, in plain English

An informational guide • Nail Refresh UK

1. How a toenail actually works

A nail is made of keratin, the same protein as your hair. It grows from the matrix — the living tissue tucked under the skin at the base of the nail — and slowly pushes forward across the nail bed. The visible nail plate itself is not alive, which is why caring for nails is really about two things: looking after the skin and matrix that produce new nail, and conditioning the plate and surrounding skin as the nail grows out. Toenails grow slowly: roughly 1–2 mm a month, so a big toenail can take the best part of a year to fully replace itself.

2. Why nails look dull or discoloured

There are lots of harmless reasons a toenail loses its clear, healthy look:

• Age and wear. Nails naturally thicken and lose shine over the years.
• Trauma. A stubbed toe or repeated pressure from tight shoes can bruise or thicken a nail.
• Nail varnish. Long spells under dark polish without a break can leave nails stained and dry.
• Dryness. Cuticles and the skin around the nail crack when they're not conditioned.
• Moisture and warmth. Sweaty trainers and communal showers create the damp conditions that nail problems love.

Some discolouration, though, points to a fungal nail infection (onychomycosis) — and that's a medical issue, not a cosmetic one. We'll cover when to get that checked below.

3. Signs worth paying attention to

Cosmetic dullness is one thing; a developing problem is another. Keep an eye out for a nail that is becoming thickened, crumbly, lifting away from the nail bed, changing colour (yellow, white, brown or green), or giving off an odour. None of these mean disaster, but they're a cue to look more closely and, if they persist, to get a professional opinion.

4. A simple daily care routine

Good nail care is unglamorous and consistent. A routine most people can keep up looks like this:

• Keep feet clean and dry. Dry thoroughly between the toes after washing — fungi thrive on moisture.
• Trim straight across. Cut nails straight, not too short, to reduce ingrowing.
• Rotate your shoes and let trainers dry out fully between wears; choose breathable socks.
• Don't share nail clippers, files or towels, and be cautious in communal changing rooms.
• Condition daily. A nail and cuticle oil keeps the plate and surrounding skin from drying out.

5. Where nail oils fit

A botanical nail oil — like Nail Refresh — sits firmly in the cosmetic care part of this routine. Oils such as jojoba, sweet almond and rosehip condition dry cuticles and the skin around the nail, while essential oils like tea tree and oregano are traditionally associated with a "clean nail" routine and have been studied in the lab for antimicrobial properties. The honest framing is this: a nail oil is a way to support the appearance of healthier-looking nails and care for the surrounding skin. It is not a medicine, and a diagnosed infection needs proper treatment.

6. Common mistakes to avoid

• Giving up after a fortnight. Nails grow slowly; two weeks tells you almost nothing.
• Cutting nails too short or rounding the corners, which encourages ingrowing.
• Living in damp shoes and skipping the "dry between the toes" step.
• Ignoring a spreading or painful nail in the hope it sorts itself out.

7. When to see a GP or podiatrist

Please get professional advice if a nail problem is spreading, painful, bleeding or discharging; if the nail is markedly thickened or lifting; or if you suspect a fungal or bacterial infection. This is especially important if you have diabetes, poor circulation or a weakened immune system, where foot problems need closer attention. A pharmacist can advise on over-the-counter antifungal treatments, and a GP or podiatrist can diagnose what's actually going on. A cosmetic oil is a nice part of everyday care — it is not a replacement for medical treatment.

This guide is general information, not medical advice. Nail Refresh is a cosmetic topical oil for external use and is not intended to diagnose, treat, cure or prevent any disease or condition, including nail fungus. These statements have not been evaluated by the MHRA or the FDA.