I Did Nails For Twelve Years. You Cannot Glue A Nail Back Together.

a nail splits. it catches on everything, it is going to tear further, and there is a tube of nail glue in the drugstore that promises to put it back together. so people glue it, and a week later the split is longer and now there is a hard ridge of cured adhesive sitting on top of it.

i did nails professionally for twelve years. the thing i want to say plainly up front is that glue is a splint, not a repair. a nail plate is not a material that heals — it is dead keratin being pushed out of a growth center under your cuticle, so the only thing that ever fixes a split is the four to six months it takes for the nail to be replaced.

the number nobody says out loud

medlineplus, which is the national library of medicine’s patient-instruction library, gives it directly: “a new fingernail will take about 4 to 6 months to grow to replace the lost nail.” toenails “take about 12 months to grow back.”

four to six months. that is the actual timeline you are managing, and every decision in this post gets easier once you accept it. you are not fixing a nail this week. you are keeping it from getting worse for a season.

and the honest part most people would rather not hear: “the new nail will probably have grooves or ridges and be somewhat misshapen. this may be permanent.” that is the source’s wording, not my pessimism.

the “special glue” is real. it is not the tube in the drugstore.

here is where the confusion comes from. that same page does mention glue — for a nail avulsion, where the plate has pulled away from the bed: “the nail will be reattached with a special glue or stitches.” and if it cannot be reattached, “your provider may replace it with a special type of material.”

read the subject of that sentence. a provider does that, to a nail bed they can see, usually after cleaning and sometimes after stitching the bed underneath. it is not an instruction to bond a torn nail down over a wound you have not looked at and cannot sterilize.

the dividing line is published too. home care applies when “the nail is not cut or torn and is still attached to the nail bed.” and: “for more serious nail injuries, you should go to an urgent care center or the emergency room.” cut, torn, or lifting away from the bed is not a home job, however good the glue claims to be.

two things that look cosmetic and are not

blood under the nail has a threshold. self-care applies if “you have a nail bruise that is less than one fourth the size of your nail.” bigger than that and “your provider will create a small hole in the nail” to let it drain and take the pressure off. that is a procedure, done with clean instruments, and it is the reason a smashed finger throbs the way it does.

and a nail that is lifting rather than splitting belongs to somebody else entirely. the american academy of dermatology’s list of nail changes to get looked at is explicit: “a dermatologist should examine any nail that’s lifting up.” their named causes include fungal infection, psoriasis and injury from an aggressive manicure. i have written about why you cannot tell which of those it is by looking, and that applies here too.

same list, same page: a new or changing dark streak down a nail is a skin-cancer check, because it “could be melanoma.” none of that gets a product from me and none of it ever will.

so what do you actually do with a split that is still attached

you take the length off. all of it, on that nail, down to where nothing overhangs — because the split is being levered open every time the free edge catches on a pocket or a car door. a glass nail file is the tool for this: it cuts cleanly in one direction without shredding the layers the way a cheap board does. i have not used this particular one, and what matters is that it is glass rather than grit on cardboard.

file in one direction, from the outside edge toward the center, and stop. the back-and-forth sawing motion is the thing that caused half of these in the first place, which is the entire argument of you are sawing your nails in half and i am not going to re-litigate it here.

then do not buff it. a four-way buffer is linked here as a warning: buffing a split flat removes plate from around the split rather than closing it, which leaves a thinner nail with the same crack in it. that is the same mistake as trying to buff a ridge out of a nail, with a worse ending.

covering it honestly while it grows

a ridge-filling base coat will make a short split much less visible and will hold the layers together under polish for a few days at a time. i want to be exact about what that is: camouflage and a little mechanical support. it fills. it does not mend, and when it chips the split is still underneath.

keep the plate and the skin around it flexible, because a dry nail is a brittle nail. jojoba oil is a reasonable pick for the nail fold — it is a small enough molecule to actually get somewhere rather than sit on top — and plain petrolatum ointment over the top of it at night is the occlusive half. these are category picks, not brands i can vouch for.

when you take polish off, the removal is where splits get worse. lint-free cotton rounds instead of a cotton ball, because a cotton ball leaves fibers hooked in the crack and you will pull them out with the nail attached. and a non-acetone remover while a nail is compromised — it is slower, which is the trade, and it is less dehydrating on a plate that is already splitting.

the parts with no link on them

for the first day after you smash one: “apply ice (inside a cloth) for 20 minutes every 2 hours on the first day, then 3 to 4 times a day after that,” and keep the hand above the level of your heart, which does more for the throbbing than anything you can buy. the nail bed itself takes “about 7 to 10 days” to heal under there.

call somebody if redness, pain or swelling is increasing, if there is pus, if you have a fever, or if bleeding does not stop. and if you are wearing an artificial nail over an injury, the instruction is that “it should stay in place until your nail bed heals” — do not pry it off to have a look.

that is the whole honest version. file it short, keep it oiled, cover it if you want to, leave it alone for a season, and send anything that is lifting, bleeding or changing color to somebody with a license. the split in your fingertip skin is a different problem with a different fix, and i wrote that one up separately in those splits in your fingertips are not dry skin.