Condom Types and Alternatives — Complete Guide

Most "condom" content focuses on the standard latex external condom. But there's an actual market of options, each with different protection profiles, comfort considerations, and best uses. Picking the wrong one — or using it wrong — undercuts the protection.

Here's the practical guide.

The short answer

External (regular) condoms

These are the dominant condoms in the market — what most people mean by "condom." Worn on the penis or insertive sex toy.

Latex external condoms

• Most widely available
• Highly effective when used correctly (98% perfect use, 87% typical use against pregnancy; high STI protection)
• Inexpensive ($1-2/each, often free at clinics)
• Brands: Trojan, Durex, Lifestyles, Skyn, ONE, many others

Polyurethane condoms

• For people with latex allergy
• Slightly thinner; transmit heat better
• Less stretchy than latex — higher breakage rate
• More expensive
• Brands: Trojan Supra, Avanti Bare

Polyisoprene condoms

• Latex-like feel without latex protein (so safe for latex allergy)
• More flexible than polyurethane
• Brands: Skyn Original, Lifestyles Skyn

Nitrile condoms

• Newer material; some external and most internal condoms use it
• Latex-allergy safe
• Less common as external option

Lambskin condoms

• Made from intestinal lining
• Prevent pregnancy
• Do NOT prevent STIs — natural pores let viruses through
• Niche; some prefer the sensation
• ⚠️ If you're concerned about STIs, don't use lambskin

How to use external condoms correctly

The "correct use" rate matters because typical use is much lower:

1. Check expiration date — old condoms are weaker
2. Open carefully — don't tear with teeth or nails
3. Check direction — the rim should roll outward
4. Pinch the tip — leave space for semen, expel air
5. Roll down fully — all the way to the base
6. Use water- or silicone-based lube — oil destroys latex
7. Hold the base when withdrawing — prevents slip-off
8. Withdraw soon after ejaculation — while still erect
9. Use a new condom for each act
10. Dispose in trash — don't flush

Common mistakes

• Putting it on inside-out (then flipping it — virus is now on the outside)
• Using oil-based lube (Vaseline, baby oil, lotion) with latex
• Using only at the end of sex
• Reusing
• Not storing properly (wallet for months, hot car)

Internal (female) condoms

The internal condom (FC2, formerly "female condom") is a nitrile sheath inserted in the vagina or anus before sex.

How it works

• Pre-lubricated nitrile pouch with two flexible rings
• Inner ring inserted like a tampon (or further in for anal use)
• Outer ring stays outside, covering vulva/anus
• Receptive partner controls insertion

Effectiveness

• Pregnancy: 79% typical use; 95% perfect use
• STI: Effective barrier; similar to external condoms for most STIs

Advantages

• Can be inserted hours before sex
• Stays in place even if partner loses erection
• Doesn't require partner to wear anything
• Can be used by anal-receptive partners
• Compatible with all lubes (including oil)
• Latex-free

Disadvantages

• More expensive ($2-4 each)
• Less widely available
• Takes practice to insert
• Some find the outer ring noticeable
• Some prefer the feel of external condoms

Best for

• Receptive partner who wants control over protection
• Anal-receptive sex (avoids slippage that can occur with external)
• People with latex sensitivity
• Spontaneous sex (insert ahead of time)

Dental dams

A dental dam is a thin sheet of latex or polyurethane used as a barrier for oral-vulva or oral-anal contact.

How to use

• Place flat over the area before oral contact
• Hold in place (no adhesive)
• Use a new dam for each act
• Don't flip it over (one side toward you, other toward partner)

Where to find

• Sexual health clinics often have them free
• Online specialty retailers
• DIY: cut open an external condom along the side — creates a flat sheet
• DIY: cut a non-microwavable latex glove

Effectiveness

• Provides barrier protection against oral-genital STI transmission (herpes, HPV, gonorrhea, chlamydia, syphilis at chancre)
• Adherence is the issue — most people don't use them

When to consider

• Receiving oral with a partner who has known STI
• Receiving oral during a herpes outbreak
• Sex worker / professional contexts
• High-risk encounters

Lube — why it matters

Lube is part of safer sex. Using the right amount:

• Reduces condom breakage
• Reduces microabrasions (which increase STI risk)
• Improves sensation

Water-based lube

• Safe with all condoms and toys
• Examples: K-Y, Astroglide, Sliquid, GoodHead
• Dries out over time — reapply

Silicone-based lube

• Safe with latex/polyisoprene condoms
• NOT safe with silicone sex toys (degrades them)
• Lasts much longer
• Examples: Wet Platinum, Pjur, ID Millennium

Oil-based lube

• DESTROYS latex condoms (do not combine)
• OK with polyurethane condoms
• Examples: coconut oil, mineral oil, Vaseline
• Generally NOT recommended for partnered sex with most condoms

What about lube with spermicide?

• Nonoxynol-9 (N-9) is the active ingredient
• Reduces pregnancy risk slightly
• May increase HIV risk due to microabrasions in some studies
• CDC currently recommends against spermicide-only condoms

Condom myths debunked

"Double condoms are safer." No — doubling causes friction and breakage. Single condoms work.

"Lubed condoms are less protective." False — they're more reliable because of reduced breakage.

"I'm allergic to latex — there are no options for me." Wrong — polyurethane, polyisoprene, nitrile all exist.

"Condoms only prevent pregnancy." They prevent both pregnancy and many STIs (HIV, gonorrhea, chlamydia, syphilis, hepatitis B, trichomoniasis). They partially prevent HPV, herpes, and molluscum (skin-to-skin transmission outside condom area).

"Lambskin is the most natural-feeling." Some prefer it, but it does NOT prevent STIs.

"I can reuse it if I wash it." No. One use only.

Storage and expiration

• Store in a cool, dry place
• Don't carry in a wallet for weeks
• Don't leave in a hot car
• Check expiration date (typically 3-5 years from manufacture)
• Air bubble in package should be intact

Alternatives to barrier methods (and what they don't replace)

HIV prevention without barriers

• PrEP (pre-exposure prophylaxis) — see PrEP vs PEP
• U=U — undetectable HIV+ partner can't transmit — see U=U Explained

STI prevention without barriers

• DoxyPEP — doxycycline pill after sex prevents most bacterial STIs in MSM — see doxyPEP guide
• Vaccines: HPV, hepatitis B, mpox (JYNNEOS)
• Regular testing

Pregnancy prevention without barriers

• IUDs, implants, pills, patches, etc.
• These don't prevent STIs — pair with condoms for STI protection

Real talk on effectiveness

Used correctly:

• Latex external condoms: ~98% pregnancy prevention, very high STI prevention
• Internal condoms: ~95% pregnancy prevention, similar STI protection
• Dental dams: barrier protection for oral STI transmission

Used typically:

• External condoms: ~87% pregnancy prevention (typical use)
• Most STI protection drops less than pregnancy protection

The gap between "perfect use" and "typical use" is mostly about consistent, correct use across many encounters over time.

Best practices

• Have condoms accessible — pocket, nightstand, bathroom
• Make condom use part of foreplay
• Use enough lube
• Replace condoms if you switch from oral to vaginal/anal sex
• Discuss preferences with partner ahead of time
• Have a backup plan (Plan B, PEP) if anything goes wrong

When to skip the condom — and what to use instead

For specific stable contexts:

• Long-term monogamous relationship with both partners tested negative recently → many couples discontinue condoms
• HIV+ partner with undetectable viral load + no other STIs + monogamy → U=U applies
• IUD + PrEP + DoxyPEP combination for ongoing high-risk sex

These are decisions to make with full information, not defaults. Layered prevention generally beats single-method prevention.

Bottom line

Condom protection works when you:

• Use the right material (latex, polyurethane, polyisoprene, nitrile — NOT lambskin for STI protection)
• Use the right kind for the act (external for penile sex; internal for vaginal/anal; dental dam for oral)
• Use it correctly every time
• Use water- or silicone-based lube (not oil with latex)
• Combine with other prevention (PrEP, DoxyPEP, vaccines, testing)

Picking the right condom is part of having safer sex — not a constraint on the sex itself.

For more on prevention: do condoms prevent STIs?, PrEP vs PEP, doxyPEP, HPV vaccine for adults over 26.