Short answer

Correct external condom use is a short checklist executed identically every time: intact in-date condom, careful hand opening, right-side-out fit with pinched reservoir tip, full unroll before any genital contact, generous compatible lubricant, held-base withdrawal while erect. Then knot, wrap, and bin.

Each step prevents a specific failure mode; skipped steps cause the breakage, slippage, and exposure statistics attributed to “condom failure.” Practice sober until the sequence is automatic.

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Step by step. The seven moves in order

  1. Check expiry and intact packaging (dates current, foil undamaged, no heat exposure. Replace wallet and glovebox stocks regularly).
  2. Open by hand at the corner serration (push condom aside first. Teeth, nails, and jewelry puncture latex invisibly).
  3. Confirm the roll faces outward (unrolls easily means correct side; inside-out means flip to a new condom. Never flip and reuse).
  4. Pinch the reservoir tip (air bubble removal. Trapped air bursts under pressure).
  5. Place on the erect penis and unroll to the base before any genital contact (pre-ejaculate carries STIs and sperm from first touch. Late application is the commonest effectiveness leak).
  6. Add compatible lubricant generously (water- or silicone-based with latex. Dryness causes most breakage).
  7. After ejaculation, hold the base and withdraw while still erect (prevents slippage and spillage).
  8. Knot, wrap in tissue, bin. Never flush, never reuse.

Error catalog at Condom Use and Common Mistakes.

Error-proofing. Storage, pairing, and failure response

  • Store cool and dry (bedside drawers, not wallets or gloveboxes long-term. Heat and friction degrade latex steadily).
  • One condom per act; new condom for each orifice (oral to vaginal to anal transitions each get fresh barriers. Cross-site reuse transfers organisms between sites).
  • Pair with additional lubricant for anal sex (generous, reapplied. The rectum does not self-lubricate).
  • If breakage or slippage occurs: stop, assess exposure, and seek PEP evaluation promptly where HIV risk applies (STI Risk After Condom Breakage for the complete protocol).

Fit and material. Sizing and alternatives

  • Snug, standard, larger, and slimmer fits exist. Poor fit drives most slippage and much breakage (sample two or three nominal widths to find yours).
  • Latex allergy alternatives: polyurethane or polyisoprene condoms protecting comparably (verified certifications. Novelty products without ratings excluded).
  • Lambskin blocks pregnancy but not STIs (porous to viruses. Never an infection-prevention choice).

Fit and material questions get hands-on answers at any sexual-health clinic’s technique coaching. Bring the fit problem, leave with samples.

When to seek care

After failures with possible HIV exposure (PEP clock), for latex allergy evaluation, and for routine screening. Condoms reduce risk; they don’t replace testing.