I'm mid-20s but get very dry hair and skin. Despite using heavy night time moisturiser, not putting soap on my face, not shampoo-ing my hair, eating a lot of omega-3 (good fat) rich food e.g. walnuts, salmon etc., drinking lots of water, generally a healthy diet, I have flaky skin, dry flaky scalp and very dry hair.
Any ideas what might be causing it?
In terms of chinese medicine, I heard a yin deficiency can cause it.