Oiling hair overnight for deep conditioning is a tried-and-true method, but it may not be right for everyone and may have adverse effects. If you oil your hair overnight, use the proper quantity,
Long hair may transfer oil from your hair to your face if you oil it overnight. Clogged pores may cause acne, especially on the forehead and sides of the face.
Oil on the scalp for too long may cause dandruff and fungal diseases. Excess oil promotes yeast and fungus growth, producing itching and flakiness.
Overnight oiling may make certain hair types oily and limp. Overnight oiling may weigh down fine or greasy hair, making it hard to maintain.
The oil from your hair can transfer to your pillowcase and bedding, leading to stains and requiring more frequent washing.
Oil on hair may cause breakage, particularly if you tie it up at night. Hair might break because of oil weight and pillowcase friction.