Hi there. I'm Shin, the host of the VIANGE HAIR Blog, which covers all hair concerns.
Is blow-drying bad for hair? Let's delve into that.

Excessive heat can damage the hair, but correct blow drying will not harm it. Vice versa, air-drying is good for your hair is a myth. Wet hair is typically weak and susceptible to damage. When hair is wet, the elasticity increases, which allows the hair to stretch and the cortex to swell more. Then it cracks and permanently damages hair.

Additionally, air drying can take longer and potentially lead to fungal growth on the scalp. Overgrowth of fungus usually causes dandruff, bad smell, and inflammation.

Before drying, remember to apply a leave-in treatment to protect your hair from the dryer's heat!
I hope this information helps you maintain healthy and beautiful hair!