The Short Answer
To use a condom correctly: check the expiry date, open the wrapper by hand from the edge, pinch the reservoir tip to squeeze out air, roll it all the way down the erect penis before any genital contact, add water-based or silicone-based lubricant on the outside, and after ejaculation withdraw while still firm while holding the base. Use a new condom every time, never two at once, and never oil-based lubricant.
Key Takeaways
Put it on before any genital contact, not just before ejaculation.
Pinch the tip. Trapped air is a leading cause of breakage.
Oil-based products destroy latex within minutes. Water or silicone only.
Two condoms are more likely to fail than one, never double up.
Before You Open the Packet
Most condom failures are decided before anyone touches the wrapper. Storage and expiry do more damage than technique ever does, because latex degrades quietly and gives you no warning that it has.
Check the expiry date. It is printed on both the box and every individual wrapper. Expired latex is measurably more likely to tear.
Check the wrapper has an air pocket. Press it gently. If it feels flat or brittle, the seal has gone and the condom is compromised.
Store it properly. Cool, dry and away from sharp objects. A wallet, a car glovebox or a steamy bathroom shelf will ruin one within weeks through heat and friction.
Get the size roughly right. Too tight tears, too loose slips off. Most brands publish a nominal width, and it is worth trying two or three rather than assuming.
Know the material. Latex is standard. If either partner has a latex allergy, polyurethane and polyisoprene condoms protect against pregnancy and infections equally well. Lambskin condoms do not block viruses and should not be used for infection protection.
The Eight Steps, In Order
None of this needs to be rushed or hidden. Doing it calmly and confidently is genuinely more attractive than fumbling in the dark, and it takes about fifteen seconds once you have done it a few times.
1. Open it by hand. Push the condom to one side of the wrapper, then tear from the serrated edge. Never use teeth, scissors or a fingernail. Long nails puncture condoms invisibly.
2. Check which way it unrolls. The rim should sit on the outside like the brim of a hat, and the reservoir tip should point up. If it will not unroll easily, it is inside out.
3. If it was inside out, throw it away. Do not flip it over and reuse it. The outside has already been in contact with pre-ejaculate.
4. Pinch the tip. Squeeze the reservoir between finger and thumb to push the air out, and keep pinching while you roll. Trapped air has nowhere to go at the moment of ejaculation, which is exactly when condoms burst.
5. Roll it all the way down. Onto a fully erect penis, all the way to the base, before any genital contact at all. Pre-ejaculate can carry both sperm and infections, so "putting it on just before" is not protection.
6. Add lubricant on the outside. Water-based or silicone-based only. Friction is the other main cause of tearing, and a few drops make a real difference. One drop inside the tip before rolling can increase sensation, but no more than that or it will slip.
7. Withdraw while still firm. After ejaculation, hold the condom firmly at the base and withdraw before the erection softens. Waiting is how condoms slip off inside a partner.
8. Tie, wrap and bin it. Knot the open end, wrap it in tissue and put it in a bin. Never flush a condom, and never reuse one under any circumstances.
Internal condoms work too
Internal condoms, sometimes called female condoms, are inserted into the vagina and can be put in up to a few hours in advance. They are made of nitrile, so oil-based lubricant is safe with them, and they are a good option when latex is a problem or when the receptive partner wants to control protection directly.
The Ten Mistakes That Cause Most Failures
Studies that survey real-world condom use find error rates far higher than most people would guess. These are the ones that come up again and again.
Putting it on late
Why it matters: pre-ejaculate can contain both sperm and infectious material. Partial-session protection is not protection.
Not pinching the tip
Why it matters: the trapped air has nowhere to escape and the condom ruptures at the worst possible moment.
Using oil-based lubricant
Why it matters: petroleum jelly, baby oil, lotion and coconut oil weaken latex within minutes. Water-based or silicone only.
Wearing two at once
Why it matters: latex rubbing against latex increases friction and makes both more likely to tear, not less.
Opening it with teeth
Why it matters: it creates micro-tears you cannot see. The same is true of scissors and long fingernails.
Not unrolling it fully
Why it matters: a partly unrolled condom slides off during movement. It should reach the base.
Reusing one
Why it matters: single use only, every single time, including if you switch between types of sex during one session.
Storing it in a wallet
Why it matters: body heat plus constant friction degrades the latex. A wallet condom that has lived there for months is unreliable.
Waiting to withdraw
Why it matters: as the erection softens the condom loosens and can be left behind entirely.
Ignoring the size
Why it matters: the wrong nominal width is one of the strongest predictors of both breakage and slippage. It is worth experimenting.
If the Condom Breaks or Slips
It happens, and panicking wastes the window in which you can actually do something. Both of the useful options are time-sensitive, so act the same day.
Stop and check. Withdraw, look at the condom, and work out whether it tore, slipped, or was left inside. If it is inside, it can be removed with fingers.
Do not douche. Rinsing the outside is fine. Douching pushes material further in and irritates tissue, raising infection risk.
Consider emergency contraception. Where pregnancy is a possibility, emergency contraceptive pills work best the sooner they are taken, and a copper IUD is the most effective option within its window. A pharmacist or clinic can advise the same day.
Ask about PEP if HIV is a possible exposure. Post-exposure prophylaxis must be started within 72 hours, and the sooner the better. This is an emergency department or sexual health clinic conversation, not one to postpone.
Book an STI test. Most infections are not detectable immediately, so a clinic will advise the right window to test in. Our health and safety guide covers testing timelines in more detail.
This is medical territory
How To Sex is an educational publisher, not a medical provider. Anything involving your own body, symptoms, medication or a possible pregnancy should go to a pharmacist, GP or sexual health clinic. They have heard it all before, and they are not there to judge you.
What Condoms Do and Do Not Cover
Condoms are the only widely available method that reduces the risk of both pregnancy and sexually transmitted infections at the same time. That is why they are usually recommended alongside hormonal contraception rather than instead of it, an approach often called dual protection.
They are not equally protective against everything, though. Infections transmitted through fluids, including HIV, gonorrhoea and chlamydia, are very well covered. Infections transmitted through skin-to-skin contact, including herpes, HPV and syphilis, are only partly covered, because a condom does not cover every area of contact.
Strong protection
HIV, chlamydia, gonorrhoea, trichomoniasis and hepatitis B, all of which are transmitted primarily through bodily fluids that a condom contains.
Partial protection
Herpes, HPV, syphilis and pubic lice, which spread through skin contact in areas a condom does not cover. Vaccination against HPV adds significant protection here.
No protection
Nothing at all if it is used inconsistently, stored badly, or applied after contact has already begun. Consistency is the whole mechanism.
For the wider picture, including contraception options and how often to test, read our safe sex guide. If lubricant is new territory, which lubricant to use and when covers what is safe with latex. And if you are preparing for a first time, the beginner's guide puts protection in context alongside consent and preparation.
Further Reading
This article supports our full Health & Safety guide, which covers the subject end to end. For anything about how we write and review this material, see about us or the FAQ.
For clinical and public-health information beyond the scope of an educational guide, these independent sources are worth reading:
A note on medical advice
How To Sex is an educational publisher, not a medical provider. Nothing here is a diagnosis or a treatment plan. Anything involving your own body, symptoms, medication or pregnancy should go to a qualified healthcare professional.
Frequently Asked Questions
How effective are condoms really?
With perfect use, external condoms are roughly 98% effective at preventing pregnancy across a year. With typical real-world use that falls to about 87%, and almost all of that difference comes from inconsistent use and avoidable errors such as putting the condom on late, trapping air in the tip, or using oil-based lubricant.
Do condoms expire, and does it matter?
Yes, and yes. Latex degrades over time, and expired condoms are significantly more likely to tear. The date is printed on the individual wrapper as well as the box, so it takes two seconds to check. Heat and friction accelerate the process, which is why a condom stored in a wallet or car may be unreliable well before its printed date.
Can I use two condoms for extra protection?
No. Wearing two condoms at once, or an external and internal condom together, creates friction between the two layers and makes tearing more likely rather than less. One correctly used condom is the safest configuration.
What lubricant is safe to use with condoms?
Water-based and silicone-based lubricants are both safe with latex, polyisoprene and polyurethane condoms. Oil-based products including petroleum jelly, baby oil, body lotion, massage oil and coconut oil break latex down within minutes and must be avoided. Silicone lubricant should not be used with silicone toys, as it degrades them.
What should I do if the condom breaks?
Stop, withdraw and check what happened, and do not douche. If pregnancy is a possibility, emergency contraception is most effective the sooner it is taken, so contact a pharmacist or clinic the same day. If there is a possible HIV exposure, post-exposure prophylaxis must be started within 72 hours. Arrange an STI test at the window a clinician recommends.
Do condoms protect against all STIs?
They protect very well against infections spread through fluids, including HIV, chlamydia and gonorrhoea. Protection is only partial for infections spread by skin-to-skin contact such as herpes, HPV and syphilis, because a condom does not cover every area of contact. Regular testing and HPV vaccination close much of that remaining gap.
