Sleeping with wet hair may seem like a harmless habit, but it can have detrimental effects on your hair and scalp. The friction created between wet hair and fabric while tossing and turning in your sleep can cause fissures and tears on the hair shaft, leading to breakage and split ends. Certified trichologist Shirley Hill explains that wet hair fibers are more fragile and susceptible to damage due to the temporary disruption of hydrogen bonds in the protein structure of hair strands. This increased elasticity makes hair more prone to breakage, especially for those with straight or wavy hair. Curly and textured hair types, however, may experience the opposite effect, with increased elasticity reducing the likelihood of breakage.
Apart from hair damage, sleeping with wet hair can also disrupt the delicate balance of your scalp microbiome. Dermatologist Michelle Henry explains that the combination of moisture, sweat, sebum, and product buildup can create a breeding ground for bacteria and yeast, hindering hair follicle health and function. This can lead to scalp acne, itching, and even infections. Additionally, the damp environment can encourage the growth of mold on pillows and bedding, further exacerbating scalp and hair concerns.
To avoid these negative consequences, it is crucial to dry your hair completely before bed. If you don’t have the time or energy to blow-dry your hair, there are certain steps you can take to minimize the damage. Hill recommends using hair products that increase slippage or sleeping on satin or silk pillowcases to reduce friction. You can also style your hair in a way that promotes oxygen flow and prevents tangling, such as plaits or loose braids for straight hair and pineappling or twisting for curly or coily textures. While sleeping with wet hair occasionally may not cause significant problems, it is best to make it a rare occurrence to maintain healthy hair and scalp. By following these tips, you can protect your hair from unnecessary damage and keep it looking its best.
