How to keep glasses from sliding down your nose

Glasses usually slide down your nose for one of a few reasons: the frame is a little too wide, the arms don't curve snugly behind your ears, the nose pads are worn or slick with skin oil, or the lenses are heavy. Most of these can be put right in a few minutes by an optician, often for little or no charge, and a couple you can deal with yourself at home.

When I worked in an optical shop, glasses that wouldn't stay up were one of the most common reasons people walked in without an appointment. The fix was nearly always small. Here is what causes the slide, what is safe to try at home, and what is better left to someone with the right tools.

Why glasses slide down

The frame is too wide, or the arms are too straight

The arms of your glasses, which opticians call temples, should rest lightly along the sides of your head and curve down behind your ears. The bend should start just behind the top of each ear. If the temples are straight, or the bend sits too far back, nothing holds the frame in place, and gravity does the rest. Temples that are too short cause a different problem: the bend lands on top of the ear and pushes the frame forward.

Frames also loosen with wear. Taking glasses off with one hand pulls one temple outward every time, and over months the frame widens until it no longer grips.

The bridge doesn't match your nose

A plastic frame with a fixed bridge sits straight on your nose, with no adjustable pads. If the bridge is wider than your nose, or your nose bridge is low, the frame sits too low, slides easily and may rest on your cheeks. Many frames are designed around a fairly high nose bridge. People with a lower or flatter bridge, which is common in East Asia and in young children of every background, often do better with frames sold as "low bridge" or "alternative fit", which have taller pads built into the frame, or with metal frames that have adjustable pads.

Worn or slippery nose pads

Nose pads harden and discolor with age, and hard pads grip poorly. Skin oil, sunscreen and makeup make any pad slippery, and so does sweat. On a humid Kyoto summer day, or over a steaming pot in the kitchen, even a well-fitted pair can start to creep.

Heavy lenses and loose hinges

Strong prescriptions can make lenses thick and heavy, and the extra weight pulls the frame down. Thinner, lighter lens materials can help, and an optician can explain the options for your prescription. A loose hinge screw lets the temples flop open, which loosens the whole fit.

What an optician can adjust

Most fit problems are solved with small adjustments, and a good optician makes them while you wait. Typical jobs:

• Bending the temple ends so they curve snugly behind your ears. Plastic temples are warmed first with a frame heater that softens the material evenly; metal temples are shaped with special pliers.
• Changing the angle of the temples so the frame holds the sides of your head a little more firmly.
• Adjusting the pad arms on a metal frame. Bringing the pads closer together lifts the frame higher on your nose; changing their angle lets them sit flat instead of digging in.
• Replacing hard old pads with fresh, softer silicone ones, which grip better.
• On some plastic frames, adding stick-on pads or fitting small pad arms to raise a frame that sits too low.
• Tightening or replacing loose hinge screws, and checking that the frame sits level.

Policies vary, but many shops adjust glasses at no charge, especially ones they sold, and some will help with frames bought elsewhere too. It's worth asking.

Why heat is a job for the shop

It's tempting to warm a plastic frame with a hair dryer and bend it yourself. I'd advise against it. A frame heater warms the plastic evenly and only as much as needed. A hair dryer, hot water or a stove can soften the wrong part, bubble or warp the plastic, and damage the lens coatings, which can craze into a fine web of cracks when they get hot. Metal frames bent by hand can snap at a joint, and older plastic becomes brittle and can crack.

What you can do at home

Clean the pads and temple ends

Skin oil on the pads is the most common cause of slipping, and the easiest to fix. Rinse your glasses under lukewarm water, rub the pads, the bridge and the temple ends with a drop of plain dish soap, rinse well and dry. The same sink routine cleans the lenses safely too; the guide to cleaning glasses without scratching goes through it step by step.

Tighten a loose hinge screw, gently

If a temple flops open, the hinge screw may have worked loose. Work over a towel, choose a screwdriver tip that fills the slot, hold the temple open and turn the screw clockwise until it is snug, then stop. Overtightening can strip the thread or crack a plastic frame. Leave rimless frames, where screws pass through the lens, to an optician.

Change how you take your glasses off

Use both hands, holding each temple near the hinge, and lift the glasses straight off. Put them on the same way. Push them back up by the bridge rather than by one lens or one side, and don't park them on top of your head, which stretches the temples apart.

Use a strap for sport, play and work

For running, cycling, gardening or any job where you lean forward a lot, an adjustable strap holds glasses in place. A strap keeps glasses on; it does not make everyday glasses safe for ball or racket sports. For those, eye doctors recommend protective sports eyewear with polycarbonate lenses, which can be made to your prescription.

Swapping a nose pad

Repair kits often include spare nose pads. Pads attach in more than one way, commonly push-on or screw-in, so look closely at how yours are fitted before you remove one. If you're not sure, let the optician do it; it takes them a minute.

Why fit matters more with progressives

With single-vision glasses, a frame that slides is mostly an annoyance. With progressive lenses it changes what you see. A progressive lens has a distance zone at the top, a narrow channel for middle distances, and a reading zone near the bottom. When your glasses are fitted, the optician measures where each pupil sits, across (your dual pupillary distance) and from top to bottom (the fitting height), with the frame where it is meant to sit. The article on measuring pupillary distance explains those measurements.

If the frame then slides down your nose, the whole lens drops. The reading zone moves further below your line of sight, so you tip your chin up to read, and the middle channel no longer lines up with your screen. A slip of only a few millimeters can be enough to cause this, and a stiff neck often follows. If your prescription has an "add" number on it, you have lenses where this matters; the glasses prescription reader explains what each number means, and the column on reading glasses and progressives covers how the lens zones work.

When it's time for a different frame

Adjustment can only do so much. A new frame makes sense when the frame is cracked, when a hinge keeps working loose because its thread is worn, or when the bridge is simply too wide for your nose and pads can't be added. Old plastic that has become brittle is also a reason to stop adjusting and replace.

Most frames carry their size on the inside of one temple: usually three numbers in millimeters for the lens width, the bridge width and the temple length, such as 52, 18 and 140. If you have a frame that fits well, note its numbers and compare. Your pupillary distance also helps an optician judge whether a frame's width suits your face.

What helps when your glasses keep slipping

Start with an adjustment, since it fixes most cases. These are the other options, and who each one suits.

When you look at straps, choose an adjustable one so it sits snugly without pulling the frame tight against your face; a no-tail design leaves no loose end to catch on things. With a repair kit, the screwdriver tip should fill the screw slot, and magnetic tips make tiny screws easier to handle. Neither one replaces a proper fitting: if the frame is the wrong shape for your face, a strap only hides the problem.

When to see an eye doctor

Sometimes sliding glasses are a sign of something else. If you find yourself pushing your glasses down to look over them, or tilting your head to find a clearer part of the lens, your prescription may have changed. Book an eye exam with an optometrist or ophthalmologist, and also if headaches, eye strain or blurred vision continue after your glasses have been adjusted. The guide to finding an eye doctor and planning a visit explains the different professionals and how to book.

Red, sore marks on the nose or behind the ears that don't settle, or an itchy rash where a metal frame touches your skin, are worth showing to a doctor or pharmacist. Some metal frames contain nickel, a common cause of skin allergy, and an optician can suggest other frame materials.

Get same-day eye care for new flashes of light, a sudden shower of floaters, or a shadow or curtain across part of your vision.

Go to an emergency department, or call your local emergency number (such as 911, 999, 112, or 119 in Japan), for:

• A hard blow to the eye, for example from a ball, followed by pain or blurred or double vision
• A broken lens with a fragment in or near the eye: don't rub it or try to remove anything
• Sudden loss of vision in one eye, even if it returns within minutes, which can be a warning sign of stroke
• Severe eye pain with blurred vision, especially with haloes around lights, headache or nausea

Eye emergencies and first aid explains what to do while you get help.

Questions people ask

Why do my glasses slide down when I sweat?

Sweat and skin oil make the nose pads slippery, and heat can make a frame feel looser. Washing the pads and temple ends with a drop of dish soap helps, and an optician can fit softer silicone pads or tighten the temples. For exercise, a strap is the simplest answer.

Can I fix sliding glasses myself?

You can clean the pads, tighten a loose hinge screw gently and use a strap. Bending the frame, especially with heat, is best left to an optician, who can do it without cracking the frame or damaging the lens coatings.

Why do my new glasses slip when my old ones didn't?

New frames often need a fitting adjustment once you've worn them for a few days, and a new frame may have a different bridge or temple shape from your old one. Take them back to the shop where you bought them; adjusting new glasses is a normal part of the service.

Are glasses straps only for sport?

No. They also help with gardening, housework, playing with children and any work where you look down a lot. They keep glasses in place, but they don't turn ordinary glasses into protective eyewear.