Eye makeup safety tips to prevent infections

Unlike food, makeup often lacks a prominent “best-by” date on the outer packaging. However, every time you use a mascara wand or eyeliner brush, you transfer skin bacteria into the product bottle. In the dark, moist environment of a cosmetic tube, these bacteria multiply rapidly.

• Mascara and Liquid Eyeliner: Replace these every three months without exception [2]. If the product dries out before then, do not add water or saliva to re-moisturize it, as this introduces new pathogens.
• Pencil Eyeliners: These can last longer because sharpening the pencil removes the contaminated surface.
• Powder Shadows: While they have a longer shelf life (up to two years), they should be discarded immediately if they develop a strange odor or if you have recently recovered from an eye infection.

Preventing infection starts with the environment in which you apply your makeup. Professional dermatologists and optometrists emphasize the following “golden rules”:

1. Wash Your Hands and Face

Before touching your eyelids, ensure your hands are scrubbed clean. Any bacteria on your fingers can easily transfer to the delicate mucous membranes of the eye. Similarly, always ensure your face is clean before starting. If you are refining your technique, consider these easy makeup tips backed by professional techniques to ensure a clean application.

2. Apply Outside the Lash Line

A common mistake is “tightlining” or applying eyeliner inside the lash line on the “waterline.” This practice is discouraged by optometrists because it can clog the Meibomian glands—the oil glands that prevent your tears from evaporating [1]. Clogged glands lead to chronic dry eye and the development of painful styes.

3. Never Share Cosmetics

Sharing eye makeup is equivalent to sharing germs. Viral infections like pink eye (conjunctivitis) are highly contagious and can be transmitted through shared brushes, palettes, or mascaras [3]. If you are testing products in a store, only use single-use disposable applicators.

Dirty brushes are a primary breeding ground for Staphylococcus and other harmful microbes. To prevent both eye infections and skin irritation, it is vital to learn how to properly clean your makeup brushes to prevent breakouts.

• Deep Clean: Wash brushes once a week using a gentle antimicrobial soap or a dedicated brush cleanser.
• Dry Thoroughly: Ensure brushes dry completely in a well-ventilated area to prevent mold growth.
• Disposable Applicators: For liquid-based products used by multiple people (like in professional kits), never “double-dip” the wand.

While aesthetically pleasing, certain cosmetic trends carry higher risks of physical injury to the eye.

The Danger of Glitter

Metallic or glittery eye shadows often contain large flakes that can fall into the eye. These particles can get trapped under the eyelid or a contact lens, causing corneal abrasions (scratches on the surface of the eye) [2]. If you must use glitter, choose “cosmetic grade” and avoid the immediate vicinity of the lash line.

False Lashes and Extensions

The adhesives used for lash extensions can cause allergic reactions or chemical burns if they contact the conjunctiva. Furthermore, improper application of magnetic lashes can scratch the cornea [1]. Always have extensions applied by a licensed professional and avoid using them if you have sensitive eyes or a history of blepharitis.

Contact lens wearers are at a significantly higher risk for Keratitis, an infection of the cornea [4].

• Order of Operations: Always put your contact lenses in before applying makeup and take them out before removing makeup.

• Avoid Fibers: Steer clear of “fiber-lengthening” mascaras, as the tiny fibers can flake off and get trapped behind your lenses, leading to painful irritation and potential infection.

The Eye Safety Action Plan

1. Purge your kit: Throw away any liquid eye products older than 90 days.
2. Clean your tools: Commit to a weekly washing schedule for all brushes and sponges.
3. Check the line: Ensure all eyeliner and shadow stay on the skin, not the wet part of the eyelid.
4. Remove before sleep: Never sleep in mascara; left-on debris can cause follicular conjunctivitis or “black lumps” under the eyelids [1].
5. Identify infections: If you experience redness, swelling, or discharge, stop using all products immediately and consult an optometrist.

Final Thought

Makeup should enhance your features without compromising your health. By prioritizing microbial hygiene and physical safety over aesthetic trends, you can enjoy your beauty routine while protecting your most valuable sense: your sight.