When I experienced continuous dryness, the things that helped turn things around were:
- Regular clarifying/chelating - which was done on a monthly basis since I didn’t use gels or products that contained silicones. This is also beneficial if you live in an area that has hard water because it not only removes hair product gunk, but also the mineral deposits that are left behind on the hair shaft from using tap water; which can inhibit moisture from penetrating the hair shaft.
- Applying Roux Porosity Control after shampooing and before a protein treatment – in order to address any porosity and pH issues
- Adding a mild protein to my regimen - as
frizzy mentioned, hair requires the addition of protein in order to assist with strength, elasticity, and porosity; which enables it to better retain the moisture it is given
- Weekly DCing with a moisture-based product – I cannot stress the importance of regular DCing. If time constraints are a problem, you can always do an extended DC on dry hair prior to shampooing, or on wet hair after shampooing (either under a cap at home, or a hat/scarf while traveling) as you take care of other necessary business.
- Consistent careful detangling using an effective tool (for me, it is a seamless wide toothed comb) and product (a conditioner that provides a large amount of slip) - as
KumakoXsd highlighted, regular detangling helps decrease the tangles and knots that can occur from the interaction between the unshed hairs and shed hairs
Forgive the long post, but as soon as I hear/read that someone is experiencing dryness, I immediately think: clarify/chelate, porosity, protein and moisture. Once you are able to remove the junk that may be impeding upon your hair’s ability to maintain adequate moisture levels (hair product residue, mineral deposits), you can address the issues that may be contributing to the problem (porosity, lack of protein); which will enable you to effectively infuse your hair with moisture (water, DCing). Again, I apologize for the longwinded post; I hope that it helps you in some way.