Lubricants: Water, Silicone, Oil – Which One for What?

Lube isn't a luxury item, nor is it a sign that something's 'wrong'. It's a practical product that makes intercourse more comfortable, extends your sessions, reduces irritation, and improves compatibility with condoms and intimate toys. But you have to choose the right one. Here are the criteria that really matter.

Why use a lubricant

Natural vaginal lubrication varies depending on your cycle, stress, fatigue, certain medications (antihistamines, antidepressants, contraceptives), or simply the moment. A lack of lubrication doesn't reflect a lack of desire. The same goes for anal intercourse: the area produces no natural lubrication, so adding some is essential.

A good lubricant reduces micro-tears, lowers the risk of condom breakage, and allows you to go for longer without discomfort. It's a tool for both pleasure and prevention.

The three main types of lubricants

Each base has its strengths and weaknesses. The right choice depends on the intended use.

Water-based lubricant

The most versatile and the best-selling. It's compatible with all condoms, all intimate toys (latex, silicone, ABS, glass), and all mucous membranes. It washes off easily with plain water and doesn't stain sheets.

Main drawback: it dries out quite quickly, especially during longer sessions or in water. You can reactivate it with a little water or saliva, or simply reapply. Some contain glycerin, which should be avoided by people prone to yeast infections.

It's the default option for most situations.

Silicone-based lubricant

Slicker, longer-lasting, hypoallergenic, and waterproof. It lasts an entire session without needing a top-up, works in the shower or bath, and has a very silky feel. Compatible with latex and polyisoprene.

The catch: it's not compatible with silicone intimate toys. The silicone in the lube attacks the silicone of the toy, causing permanent damage. For silicone toys, stick to water-based.

It can be washed off with soap and water. A few drops are enough; the effect is powerful.

Oil-based lubricant

Oils (coconut, almond, sesame, dedicated formulas) provide good glide and nourish the skin. But they break down latex in minutes. They're a no-go with a latex condom or a diaphragm. They are compatible with polyurethane condoms.

Oils can also alter vaginal pH and encourage infections. Save them for massages, external play, or intercourse without vaginal penetration.

Compatibility: the grid you need to know

A mental checklist to avoid mistakes:

• Latex condom: water or silicone, never oil.
• Polyisoprene condom: water or silicone, never oil.
• Polyurethane condom: water, silicone, or oil.
• Silicone intimate toy: water only.
• ABS, glass, metal intimate toy: water, silicone, or oil.
• Diaphragm or cervical cap: water only.

When in doubt, water-based is always safe.

Ingredients to watch out for

Not all lubes are created equal. Some ingredients can cause problems, especially for sensitive mucous membranes.

Glycerin

Very common, it gives a pleasant texture but can feed the yeast that causes thrush. If you're prone to it, choose a lubricant that is explicitly glycerin-free.

Parabens

Preservatives that have long been controversial. Most reputable brands have removed them, but they still linger in some cheap formulations. Best avoided as a precaution.

Propylene glycol

Can cause a tingling or burning sensation in some people. Not dangerous in itself, but worth testing on a small area if you have sensitive skin.

Perfumes and flavours

Flavoured lubricants contain sugars and flavourings that are fine for oral use but can disrupt the vaginal flora. Use them in the right context.

"Warming" or "cooling" effects

These products often contain menthol, capsaicin, or similar compounds. They create a strong sensation that can be either pleasant or irritating depending on the person. Test on the inside of your wrist or on your skin first, and don't apply them directly to mucous membranes the first time.

Spermicides

Nonoxynol-9 was added to lubricants for a long time. We now know that it weakens the mucous membrane and increases the risk of STIs. Avoid lubricants containing a spermicide unless advised otherwise by a doctor.

Choosing based on use

A few common scenarios and the most suitable base.

Classic vaginal intercourse

A water-based lubricant, without glycerin or fragrance, with a pH close to 4 (the physiological vaginal pH is around 3.8 to 4.5). Some brands display this pH on the label, which is a good sign.

Anal intercourse

A thicker water-based formula or a silicone base. The anal area doesn't produce its own lubrication, so you'll need plenty. "Anal" formulas are often simply thicker or longer-lasting, sometimes enriched with soothing agents. Avoid lubricants that contain a numbing agent: they mask pain, which is a useful signal.

Oral fun

Flavoured, water-based, edible lubricants. Check for a "safe for oral use" or similar statement.

With an intimate toy

Water-based if the toy is silicone; silicone or water-based if the toy is ABS, glass, or metal. If you're unsure about the toy's material, go with water-based.

In the bath or shower

Silicone is a must. Water immediately dilutes water-based lubricants.

Massage and foreplay

A specific massage oil is fine if the session ends without vaginal penetration or with a polyurethane condom. For mixed use (massage leading to penetration), a silicone lubricant serves a dual purpose.

How much to use, and when

A hazelnut-sized amount is enough to start. You can always add more, but you can't take it away. Apply to both partners or on the condom after it has been rolled on. For anal intercourse, take your time: add it gradually and don't force anything.

If the sensation becomes unpleasant (sticky, pulling, stinging), it's probably time to rinse and reapply a fresh layer.

FAQ

Can lubricant expire? Yes, usually 2 to 3 years after opening. A water-based formula that becomes cloudy, smells different, or separates should be thrown away. A silicone formula lasts longer.

Can I use saliva as a lubricant? For foreplay, yes. For prolonged intercourse, no: saliva contains enzymes that can irritate mucous membranes, and it dries out very quickly. Most importantly, it can transmit certain STIs.

Does lubricant affect fertility? Some formulas slow down sperm motility. If you are trying to conceive, choose a lubricant explicitly labelled as "fertility-friendly" or refrain from using one.

Can I make my own lubricant at home? It's a bad idea for penetrative intercourse. Homemade recipes (coconut oil, aloe vera, etc.) are not tested for mucous membranes, can disrupt the natural flora, and are often incompatible with condoms. For external massage, food-grade vegetable oil is safe.

Our suggestion

For the vast majority of uses, a water-based lubricant without glycerin or fragrance will cover 80% of situations. Add a small bottle of silicone-based lube for long-lasting sessions, the bath, or anal intercourse, and you're equipped for anything. There's no need to collect ten bottles: two good formulas are better than a full shelf.