Myth: "Nails need to breathe"

The myth

People take breaks from polish so nails can "breathe".

The facts: how it really works

The nail plate is dead keratin; the living nail matrix receives oxygen and nutrients from blood vessels. Breaks help because removal of gels and frequent acetone use thin and dry the nail.

Why it matters on darker skin

Polish can hide dark bands, so breaks also allow nail checks.

Where the myth comes from

Nails look healthier after breaks.

What actually helps — and why

Take breaks between gel sets: recover thickness. Expected timeline: weeks. Moisturise nails: replace lipids. Expected timeline: 2–4 weeks.

More detail

The idea that nails 'breathe' leads people to worry that polish suffocates them. In fact, the visible nail plate is made of hardened keratin and has no living cells to breathe. The living parts — the matrix under the cuticle and the nail bed beneath the plate — are supplied with oxygen and nutrients by blood vessels. What polish and gels do affect is water content and the surface layers. Frequent acetone removal dries the plate, and gel removal by soaking and scraping takes off thin layers of nail, which is why nails can feel thin and bendy after months of gels. Some people also develop allergy to acrylates in gels or to resins in polish, causing itchy, sore skin around the nails or on the eyelids and face. Taking breaks, moisturising, removing coatings gently and looking at bare nails regularly are the sensible habits behind the myth.

What to avoid and why

Avoid peeling off polish.

Common mistakes

• Ignoring nail changes under polish.

Everyday nail habits

Healthy nails depend on protecting the nail matrix — the growing area hidden under the cuticle — and on limiting cycles of wetting and drying. Wear gloves for washing and cleaning, keep nails short and filed in one direction with a fine file, and moisturise hands, nails and cuticles after washing and at night. Leave the cuticle in place: it is a seal that keeps water and germs away from the matrix, and cutting it is a common cause of infection. Fingernails grow about three millimetres a month and toenails about one, so a new fingernail takes four to six months and a toenail up to eighteen months; any treatment needs at least that long to judge. Choose salons that sterilise metal tools between clients, or bring your own. Take breaks between gel or acrylic sets, and never peel coatings off. Because polish can hide important changes, look at bare nails regularly, particularly for a new dark band, a lifted nail or a change in shape.

Products and treatments

Many nail products make claims with little evidence. Moisturisers containing urea, lactic acid or petrolatum have the most support for dry, brittle nails and cracked skin around them. Formaldehyde-based hardeners can make nails more brittle over time and can cause allergy, so we do not recommend them. Antifungal nail lacquers such as amorolfine or ciclopirox can help mild fungal infection limited to the tip of one or two nails, but only after the diagnosis is confirmed — many thick or discoloured nails are not fungal at all. Biotin supplements are widely sold; evidence is weak and high doses can interfere with some blood tests. If you have diabetes or poor circulation, foot and toenail problems deserve early professional care.

Questions to ask your doctor or pharmacist

Useful questions include: What do you think is causing this? Is it likely to come back, and how can I prevent it? Which products should I stop? How long before I should expect improvement, and when should I come back if it isn't better? Are there side effects to watch for? Is this treatment safe if I am pregnant, breastfeeding or for my child? Writing your questions down, bringing your products (or photos of their labels) and taking dated photos of the problem make an appointment much more useful.