It is a common belief that sleeping with wet hair can make you sick or increase your chances of catching a cold. However, there is no scientific evidence to support this claim. While sleeping with wet hair may not directly cause respiratory illnesses, there are other risks associated with it, such as hair and scalp damage.
When you wake up in the morning after sleeping on wet hair, you may notice a mildew-like smell and a damp aroma. This is due to the slower drying process caused by the wet hair, which creates a perfect environment for fungus and bacteria to thrive. Over time, this can lead to scalp problems like yellow discoloration, itchiness, buildup, and flakiness.
Fungi thrive in dark, moist, and humid environments, and can live on hair, nails, and outer skin layers. Your pillow can become a breeding ground for fungus, with up to 16 types of fungal species found on it, according to a study. Additionally, sleeping with wet hair can lead to broken and tangled strands, especially for those with curly hair. The wetness causes the outer layer of the hair to stay stretched for too long, leading to split ends, dryness, brittleness, and breakage.
In addition to hair breakage, there are different types of fungal infections that can occur due to sleeping with wet hair. One common fungal infection is Malassezia, which is linked to a skin disease called dermatitis. Another fungal infection is scalp ringworm, which affects the scalp hair and can cause patches of hair loss if left untreated. A rarer fungal infection called black piedra can also affect the hair shafts, causing black nodules and potential alopecia.
To prevent these issues, it is recommended to dry your hair before bed or use a diffuser if you have curly hair. Using a silk pillow can also help reduce friction and prevent breakage while sleeping. Anti-fungal products like shampoos and creams can be used to kill the yeast on the scalp and hair. It is also beneficial to switch your shower routine to the morning to promote skin and hair health.
Overall, while there is no direct link between sleeping with wet hair and respiratory illnesses, there are various risks associated with it, including hair and scalp damage and fungal infections. Taking preventive measures, such as drying your hair and using anti-fungal products, can help maintain the health of your hair and scalp.
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