Brown or reddish streaks under a cat's eyes are a familiar sight, especially in Persians, Himalayans and other flat-faced cats. In most cases they are cosmetic, but sometimes they signal a problem that needs treatment.
Why do tear stains appear?

Face shape: flat-faced cats often have narrow or kinked tear ducts, so tears overflow onto the face instead of draining.
Porphyrin: a natural pigment in tears that turns reddish-brown when exposed to air.
Constant moisture: lets bacteria and yeast grow, darkening the stains and causing odor.
Other causes: allergies, dust, ingrown eyelashes or eye infections.

How to clean the eyes safely

Use a pet eye-cleaning wipe or a cotton pad moistened with warm water.
Wipe from the inner corner of the eye outward.
Use a fresh wipe for each eye to avoid spreading infection.
Gently dry the area, as leftover moisture makes stains worse.
Repeat daily for flat-faced cats, and twice a week for others.

Tips to reduce stains

Carefully trim the hair around the eyes (or have a groomer do it) so it does not touch them.
Serve water in clean stainless steel or ceramic bowls.
Reduce dust and strong air fresheners at home.

When to see a vet

Yellow, green or thick discharge.
Red eyes or swollen eyelids.
Squinting or constant rubbing of the eye.
Sneezing along with eye discharge (may indicate a respiratory infection).

At Catu Store

Vet's Best eye cleaning wipes for cats and dogs.
Lysine paste to support immunity and respiratory health for cats with recurring discharge.

This article is for general information and does not replace veterinary advice.