Dear Patient: It depends on your hair type and if hair loss is present, the pattern of hair loss and dandruff. Usually Dish soap or any soap will strip any moisture from your skin leaving it dry and dehydrated. Use a natural cleanser which will balance your skins natural moisture level
I suggest you the following,
Use conditioners as per hair type:
Oily: a light or volumising conditioner
Dry: a smoothening one or almond oil-based conditioner
Rough: papaya or aloe vera conditioner
Dull: henna-based conditioner
Don't apply conditioner to roots -- use only on the ends and the hair shaft to avoid loss of volume. Special intensive repair conditioners need to be left on for 20 to 30 minutes under a hot towel wrap. Use collagen based conditioners for excessively treated, permed or straightened hair and colour-protecting conditioners for tinted hair.
Hope this helps