Using Hot Oil Hair Repair treatments has many benefits for dry hair and a dry scalp. The warm oil seals the cuticle by adding moisture to the hair follicle, which can help repair and prevent split ends. A proper hot oil hair treatment, including a scalp massage and allotting enough time for the oil to seep into the hair and scalp, can result in shiny, smooth hair once washed and dried. Hot oil hair treatment can help with dandruff, but only if the dandruff is being caused by having a dry scalp (as opposed to fungus- related dandruff).That’s because applying a hot oil hair treatment to your scalp can help stimulate blood circulation and release flaky, dry skin sitting on top of the scalp, leaving your scalp moisturized and refreshed. Keep in mind that there are other culprits that may cause dandruff-like product build-up or certain medical conditions like seborrheic dermatitis. The latter typically requires more advanced dandruff treatment.