Leaving Sheet Masks on for Too Long
It is recommended to keep sheet masks on for about 10-30 minutes. Contrary to popular belief, leaving the mask on for an extended period does not enhance absorption and can be detrimental to your skin.
Even if the mask still feels damp after the suggested duration (usually 30 minutes), removing it is crucial. Keeping it on until it dries can accelerate skin aging. Moreover, cleansing masks may contain surfactants to remove excess oil, and prolonged or excessive use can lead to irritated, inflamed skin.

The belief that leaving sheet masks on for longer leads to better absorption is a harmful misconception.
Not Changing Mask Types with the Seasons
As temperature and humidity fluctuate, so do your skin’s characteristics and needs. In winter, moisturizing masks are essential to combat dryness. However, during summer, opt for lighter, more refreshing options.
Skipping Moisturizer After Masking
Sheet masks are not a replacement for moisturizers. Most masks provide hydration through water-based formulas, while moisturizers often contain humectants that draw moisture into the skin. Follow up with a moisturizer that includes occlusive ingredients (such as oils or waxes) to prevent moisture loss through evaporation.
Failing to Cleanse Before Masking
Ensure your skin is thoroughly cleansed before applying a sheet mask. Any residual makeup, oil, or other products can act as a barrier, impeding the absorption of the mask’s beneficial ingredients. Double cleanse and consider using a toner to balance your skin’s pH before masking.
Applying a Thick Layer of Mask
Avoid applying a thick layer of the mask to your skin. Doing so forces your pores to stretch and expand to accommodate the excess product, leading to enlarged pores. Enlarged pores then become more susceptible to trapping dirt and bacteria, leading to potential skin issues.

Applying a thick layer of mask can stretch your pores, leading to enlarged pores that are more prone to clogging.
Ignoring Skin Reactions
Pay attention to any skin reactions, such as redness, swelling, or stinging. Some individuals may experience adverse reactions, which can damage the skin’s natural protective barrier. Always patch test by applying a small amount to your hand or behind your ear. For sheet masks, discontinue use if you experience itching, redness, or irritation.
Using Masks Inappropriate for Your Skin Type
Choosing a mask suitable for your skin type is essential. If you have dry skin, avoid clay masks, which can be drying. Conversely, if you have oily skin, clay masks are excellent for balancing excess oil. For sensitive skin, steer clear of masks with harsh cleansing or exfoliating ingredients to prevent irritation and breakouts.