Most common questions used to investigate
Are you using a blow dryer/flat iron/curler to style your hair?
Are you dying/bleaching your hair?
Do you wash your hair every day?
Did you change your regular shampoo or other hair products lately?
Do you wash your hair with warm water?
Are you brushing your hair when it’s wet?
Do you go to sleep with your hair wet?
Did you change your sheets lately?
Do you regularly swim at the pool or sea?
Do you expose your hair to the sun unprotected?
Do you have split ends?
Did you get a haircut in the past few months?
Common conclusions
Using hot tools regularly to style your hair is an instant solution, but in the long term it damages your hair. Avoid flat/curling iron for a while and see if it helps. It's recommended to avoid them altogether. Don't blow dry your hair often or at all, since it robs your hair’s moisture and leaves it frizzy and dry. Let your hair dry naturally or pat it gently with a clean towel.
Using chemicals on your hair definitely damages it and makes it dry. Quit dying your hair if you can and let it grow naturally. If you have to cover your grey/white hair, consult a good hairstylist about conditioning treatments and mild coloring techniques.
Don’t wash your hair every day, it makes your scalp dry and prevent it from producing natural oils that keep your hair moist. If your hair is dry you should wash it a maximum of twice a week.
It’s possible that your new hair products don’t suit your hair type. Look for products for dry/damaged hair, prefer the most natural and mild products. Don't use too much shampoo – about two teaspoons for mid-length hair is enough – same with conditioner.
A warm shower after a long day is very relaxing, but bad for your hair. Washing your hair with hot water damages your hair. Make sure you wash your hair in lukewarm or cold water if you can.
When your hair is wet it’s fragile and tends to break. Use a wide-toothed comb to untangle your hair after you wash it. Start gently from the bottom working your way up to the roots.
Make sure your hair is dry before you get into bed. Wet hair can create friction against your pillowcase while you sleep which can result in dry hair.
Wash your sheets or buy new soft ones. Dirty sheets are bad for your skin and hair, and some fabrics can be too rough on your hair. Try switching to a silk pillowcase or wrap your hair in a silk scarf while sleeping.
Overexposure to salt water and chlorine can harm your hair. When you’re done swimming make sure you rinse the pool/sea water out of your hair with clear water. Condition your hair thoroughly and brush it with a wide-tooth comb. If you get exposed to the sun wear a hat or cap to protect your hair.
Ongoing exposure to UV rays damages your hair and leaves it feeling brittle. Take care of your hair just like it’s your skin. If you can, go out early/late in the day. Wear a hat or cap to protect your hair from the sun.
It may be a seasonal condition, or a symptom to a health issue. Consult your doctor, a dermatologist, or an endocrinologist. It's possible that you have some hormonal/nutritional deficiency that affects your hair and requires treatment.
There is no one size to fit all, but some hairstylists recommend that you should get a haircut every 12 weeks in order for your hair to grow healthy.
References
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