This seems so obvious that it should not need telling. But it apparently does need to be told again because many of us unknowingly adopt several unhealthy hair practices:
Wearing styles that pull the hair tight (usually into braids or pony tails). Many women pull their hair so tight it comes out of its roots. If you change your hairstyle soon enough, your hair will recover. Otherwise, your hair might permanently stop growing from the areas it is pulled most from.
Any chemical treatments (even so-called ‘herbal’ ones) designed to drastically change the way your hair looks (styling, perming, straightening, hot-oil treatments, hot ironing).
Blow-drying your hair – This dries out the scalp and damages hair follicles. Allow your hair to air dry at least part of the time, or change the heat setting on your blower to the lowest.
Combing your hair or rough toweling when it’s wet – This will put out some hair strands from the roots and stretch and break others.
The idea of websites tracking users is old, but research at Princeton’s Center for I…