Although there's no way to completely prevent a chalazion from developing, you can follow a few steps to reduce your chances of getting one:

Wash your face in the evening before bed, making sure to remove any eye make-up. If your skin is sensitive and prone to irritations, consult a dermatologist about the best cleanser or soap to use around your eyes.
Keep up your hand hygiene, especially when it comes to applying or removing your lenses. Dirty hands can transmit bacteria to your eyes, so it's essential to wash them for 20 seconds, with clean, warm water and dry them with a lint-free towel. If you're on the go, our nifty packs of Soap Sheets make disinfecting your hands super-easy - just mix one sheet with water and you're all set.
Stick to your eye care routine to maintain optimum eye health. As well as ensuring your face and hands are spotless, it's also incredibly important to maintain your contact lens cleaning routine if you're a monthly or two-weekly wearer.
Avoid sleeping with contact lenses, unless advised by your optician and store them in a good quality multi-purpose solution, only changing brands if advised by an expert.
Solutions should never be used once they've expired, so make sure to check expiry dates.
Never store or clean your contact lenses in water, or mix the solution with other liquids, as this reduces its effectiveness and can lead to infections.
Wearers of daily contact lenses must always remove their lenses and throw them away at the end of the day, before replacing them with a new, fresh pair.

Contact lenses and chalazion