How often should you wash your hair if ypu have a very dry scalp? i usually wash every 2 weeks but my scalp is still dry

Dry Scalp: How often you wash is less important than what you use to wash with and what you are doing to help moisturizer your scalp. I think 1-2 weeks is fine with dry curly hair. I would use a moisturizer on your scalp specifically made for this, there are many, everyday to every other day. Use very mild shampoos and conditioners. It may be worthwhile to see a Dermatologist experienced with your hair type.