London, UK — You may be investing in expensive hair care products and meticulously following hair routines, but if you’re not mindful of your bedtime habits, you could be undoing all your hard work. According to cosmetologist and hair health expert Casey Nicole, common sleep-related mistakes are silently wreaking havoc on your hair.
In a recent viral TikTok video, Nicole outlined five seemingly harmless habits that could be causing breakage, irritation, and even long-term damage. Here’s what she says you need to stop doing—and what to do instead.
Sleeping with Wet Hair
Topping the list is a mistake many are guilty of: going to bed with wet hair. Nicole warns that sleeping on damp hair creates a breeding ground for bacteria, fungus, and yeast, leading to scalp issues like irritation and flakes. “Your pillow is probably absolutely disgusting,” she said, adding that the moisture can also cause facial breakouts and weaken hair strands, which are more fragile when wet.
Skipping Protective Styles at Night
Allowing your hair to remain loose—or tying it up tightly in a ponytail—can result in overnight friction that damages the ends, Nicole explained. She recommends using protective hairstyles, such as loose braids or low buns, to minimize stress on the hair shaft. Additionally, sleeping in a silk or satin bonnet helps reduce friction and maintain moisture—two essential components of hair health.
Shampooing the Hair Instead of the Scalp
Nicole emphasizes that shampoo should primarily be used on the scalp, not the hair lengths. “The scalp is where buildup, oils, and dandruff form,” she said. Letting the shampoo naturally run through the hair during rinsing is enough to clean the ends without aggressive scrubbing, which can cause unnecessary breakage.
Skipping Heat Protectant
When using heated tools like straighteners or curling irons, Nicole insists that applying a heat protectant is non-negotiable. She cautions against silicone-based products, which can appear beneficial by adding shine but may lead to dryness and heat-related damage. “Silicone isn’t water-soluble and can essentially melt into your hair under high heat,” she warned.
Wearing the Same Hairstyle Daily
Finally, Nicole advises against repeating the same hairstyle—especially tight, slicked-back styles—every day. Repeated pressure in the same area can lead to breakage and even traction alopecia, a form of permanent hair loss caused by prolonged tension on the follicles. For better hair health, she suggests rotating styles and using gentle accessories like satin scrunchies or claw clips.
While the tips may seem simple, Nicole stresses that consistency is key. Adjusting your nighttime hair habits can help prevent long-term damage and support stronger, healthier locks. For those seeking practical hair health tips, avoiding these common mistakes is an effective first step toward better scalp care and overall hair vitality.
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