Sunscreen can contribute to milia formation in some individuals, though it's not a direct cause for everyone.
Milia are small, white or yellowish cysts that appear just under the skin's surface. They are caused by trapped keratin. While sunscreen isn't the sole culprit, certain formulations and application methods can increase the risk.
Here's a breakdown:
- Comedogenic Sunscreens: Sunscreens that are heavy, oily, or contain pore-clogging (comedogenic) ingredients can trap keratin and contribute to milia development, particularly in those prone to them.
- Incomplete Removal: If sunscreen isn't thoroughly removed at the end of the day, the residue can block pores and lead to milia.
How to Reduce the Risk:
- Choose Non-Comedogenic Sunscreen: Look for sunscreens specifically labeled "non-comedogenic" or "oil-free." These are formulated to minimize pore-clogging.
- Opt for Lightweight Formulations: Consider using gel, lotion, or serum-based sunscreens instead of heavy creams, especially if you have oily or acne-prone skin.
- Double Cleanse: Thoroughly cleanse your face at the end of the day to remove all traces of sunscreen. A double cleanse (using an oil-based cleanser followed by a gentle cleanser) is often recommended.
- Exfoliate Regularly: Gentle exfoliation can help remove dead skin cells and prevent them from trapping keratin. Avoid harsh scrubs, as they can irritate the skin.
- Consider Mineral Sunscreens: Mineral sunscreens (containing zinc oxide or titanium dioxide) are often less likely to cause irritation and may be a better option for sensitive skin.
In summary: While sunscreen is crucial for protecting your skin from sun damage, choosing the right formula and properly removing it can help minimize the risk of milia.
