At a glance
Vaseline (petroleum jelly) is not a treatment for anal fissures, but many people find it useful as a protective barrier. It can reduce friction during bowel movements, protect irritated skin, and keep the perianal area from drying out. This guide clarifies what Vaseline can and cannot do.
What Vaseline does
Petroleum jelly creates a physical barrier on the skin. It does not get absorbed — it sits on the surface and acts as a protective layer.
For the perianal area, this means:
- Reduced friction during bowel movements — the stool passes more easily against a lubricated surface
- Skin protection — prevents moisture, sweat, and stool residue from irritating already inflamed skin
- Moisturising — keeps the skin from drying and cracking, which can worsen discomfort
What Vaseline does not do
- It does not relax the sphincter muscle
- It does not increase blood flow
- It does not heal the fissure
- It does not treat the underlying cause
Vaseline addresses symptoms (friction, irritation, dryness) but not the condition itself.
How people use it
Before a bowel movement
A thin layer of Vaseline applied to the anal margin before a bowel movement can reduce the friction and tearing sensation as stool passes. This is particularly helpful for people who find bowel movements painful.
After cleaning
After a bowel movement and gentle cleaning (ideally with water), applying Vaseline protects the clean, sensitive skin until the next bowel movement.
Between treatments
If you are using a prescribed topical treatment, Vaseline can be applied at times when the prescribed treatment is not being applied — for example, in the middle of the day between morning and evening applications.
As a barrier during the day
Sweat, moisture, and friction from clothing can irritate the perianal area. A thin layer of Vaseline provides ongoing protection.
Practical tips
- Use plain, unscented petroleum jelly — no fragrances, no added ingredients
- Apply a thin layer — a small amount goes a long way
- Apply externally only — not inside the anal canal
- Wash hands before and after application
- It can stain underwear — using a thin pad or liner can help