Onycholysis: causes, care, and what a specialist can do for your nails

Onycholysis is the partial detachment of the nail plate from the skin beneath it. It typically begins at the free edge and, if the cause goes unaddressed, can progress further toward the base of the nail. The separation creates a gap – usually visible as a white or pale area – where bacteria and moisture can accumulate, which is why prompt attention matters.

It can affect fingernails and toenails alike, though the feet are particularly vulnerable. Toenails are under pressure with every step: from shoe construction, from the mechanics of walking and running, from the cumulative effect of sport, narrow toe boxes, and long wear between professional appointments.

The most common cause is mechanical – pressure, repetition, and time. But the trigger is rarely one thing in isolation.

Physical trauma and footwear are frequent culprits. Shoes that are too narrow, too rigid, or simply worn for too long concentrate force on the toes in ways the nail plate was not designed to bear indefinitely. Add a nail that has grown longer between appointments, and the leverage on the nail bed increases with every stride.

Prolonged gel wear is another contributing factor – not because gel polish is inherently damaging, but because a firm coating combined with ongoing pressure creates conditions in which the nail, if already under stress, can begin to separate. The same is true of gel removed incorrectly: peeling, forcing, or rushing the process strips layers from the nail plate and weakens its attachment.

Underlying skin and nail conditions – psoriasis, eczema, thyroid imbalance, or fungal infection – can also manifest as onycholysis, which is why what appears to be a straightforward nail problem occasionally warrants a broader conversation with a GP or dermatologist.

The early signs are easy to miss. A faint pallor near the free edge, a nail that catches slightly on fabric, a vague sensitivity when lacing shoes – none of these seem urgent until the separation becomes visible.

Worth watching for: a white or yellowish area beneath the nail, a nail that feels loose or appears to float, debris collecting under the free edge, a change in nail thickness or texture, or discomfort when pressure is applied. If the area becomes warm, red, or swollen, that signals the need for prompt professional or medical attention — the nail bed, once exposed, is vulnerable to secondary infection.

It is also worth noting that gel polish can obscure these early signs entirely. A nail that looks perfect under a flawless finish may have been lifting for some time before removal reveals what has been happening underneath.

In most cases, yes – though it requires patience more than intervention. The nail plate grows slowly, and recovery means supporting new, healthy attachment from the base forward rather than rushing toward the surface.

The most important first step is to remove whatever is causing the problem. That means keeping the nail short, avoiding the footwear responsible, and giving the nail a period away from gel while it recovers. Do not attempt to remove attached nail tissue at home, and do not cover the lifting area with fresh product – moisture and bacteria find their way beneath it, and the problem develops invisibly.

Professional care makes a meaningful difference here. A specialist can assess the degree of separation, remove any product safely without further damage to the nail plate, advise on a realistic recovery timeline, and – when the nail is genuinely ready – resume treatment in a way that supports rather than stresses it. This is not a process that benefits from optimism about what lies beneath a fresh application.

At Oblique, the House of Nails team approaches nail health with the same level of consideration that guides treatment across all three houses. Nearly a decade in South Kensington has taught us that a well-advised client, given an honest picture, always arrives at a better outcome. If a nail needs recovery time before we can proceed, we say so.

Some cases of onycholysis settle well once the cause is removed and the nail is protected. Others need professional input earlier. If the nail is painful, if the lifting is spreading, if there is any discolouration suggesting infection, or if the same nail keeps presenting the same problem, an assessment is the right next step.

Where there is any suspicion of fungal nail infection, a GP or dermatologist should be involved alongside – not instead of -professional nail care. Cosmetic treatment applied over an infected nail is not appropriate, regardless of how routine the appointment might otherwise seem.

Prevention is largely a matter of attention and consistency. Keeping toenails short reduces the mechanical leverage that leads to separation. Refreshing gel pedicures within a sensible interval – rather than extending wear until removal is overdue – keeps the nail plate in far better condition over time. Choosing footwear with adequate toe space distributes pressure more evenly. And treating early sensitivity or any change in appearance as something worth investigating, rather than covering and forgetting, is probably the single most useful adjustment most clients can make.

A nail that is cared for properly between appointments is far less likely to present problems at the next one. That may sound straightforward, but it represents a different relationship with nail health than simply booking when something has gone wrong.

A nail that is lifting is not a cosmetic inconvenience. It is a signal that something in the balance between pressure, care, and recovery has shifted – and it responds well when that signal is taken seriously. If you are concerned about nail lifting, onycholysis, or the condition of your nails after prolonged gel wear, the House of Nails team at Oblique is here to assess and advise with the same care and candour we bring to every appointment.

What is onycholysis?

Onycholysis is the separation of the nail plate from the nail bed. It typically begins at the free edge and appears as a white or pale gap beneath the nail. It is a symptom, not a standalone condition – the cause should be identified and addressed rather than covered.

Why is my toenail lifting?

The most common causes are repeated mechanical pressure from tight or rigid footwear, nails that have grown too long between appointments, prolonged gel wear, or a nail weakened by improper removal. Fungal infection and certain skin conditions can also be responsible.

What should I do if my nail is coming off?

Keep the nail short and clean, avoid the footwear or activity that may have contributed, and stop applying product over the affected nail. Do not pull or force the nail. If it is painful, changing colour, or the separation is spreading, seek professional advice promptly.

Can gel polish cause onycholysis?

Gel polish is not inherently damaging, but prolonged wear combined with mechanical pressure – or removal that is rushed or forced – can contribute to nail lifting, particularly on toenails. The finish is only as healthy as the nail beneath it.

Should I remove gel polish if my toenail hurts?

Yes. Pain beneath nail product is a signal that something needs to be assessed, not hidden. Safe, professional removal is always preferable to peeling or forcing, both of which add further damage to an already stressed nail.

Is nail lifting serious?

It depends on the degree and the cause. Mild separation caught early, with the cause addressed and the nail protected, often resolves over several months of healthy regrowth. Left untreated, lifting can widen, allow infection to develop, and extend recovery considerably.

Can I still get a pedicure if my nail is lifting?

That depends on the extent of the lifting and what lies beneath it. At Oblique, we always assess the nail before proceeding. In some cases, the right guidance is a period of recovery before cosmetic treatment resumes.

How do I prevent onycholysis from recurring?

Keep nails short and well-maintained between appointments. Choose well-fitting footwear with adequate toe space. Refresh gel pedicures at sensible intervals rather than extending wear. And take early signs of sensitivity or change seriously – not as something to wait out or disguise.