Some people will tell you that the only healthy option is to avoid heat at all costs.
Others will say that using a blow dryer is actually betterespecially if you keep the proper technique in mind.
But which is true?
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And,it may not even be the healthiest.
The outer layer, called the cuticle, is calcified keratin, making it as hard as fingernails.
This gives the hair its strength and elasticity.
Its a mistake to think that letting hair dry naturally is less damaging than blow-drying it, says Rondeau.
When hair is wet, its structure changes.
Water penetrating the cortex swells the hair and weakens it.
Hair can absorb up to 30% of its own weight.
The longer it remains damp, the more it continues to swell.
Repeated swelling and slow drying can break down the structure anddamage it irreversibly.
After shampooing and conditioning, remove excess water with a terry towel or microfiber towel.
Do not rub as rubbing can break weakened hair and thus create frizz.
Apply aleave-in-conditionerif needed and aheat protectant.
Ideally, hold the nozzle about 10 inches from your strands, moving continuously.
you’re able to increase the temperature when the hair is 90% dry but not before.
To create volume, dry your hair by leaning your head forward and positioning the airflow towards the roots.
By propelling the air from the hairdryer in the opposite direction of hair growth youll get volume too.
Similarly,achieving shineis really all about aligning the hair in the same direction.
To maintain the style once dry, its important to cool the results with a stream of cold air.
This will seal the cortex and set the style, sealing in the shine, says Rondeau.
So, save the heat tools for the very end.
