I would suggest a haircut every few months and regular trims until the damage is gone. You also need to do regular PTs (protein treatments) and since your hair is dry, you may need to DT more frequently.

Another thought is using other products. Most of us start with Deva and move on to other lines. My salon has the Deva products. The only one I let them use when I went in for my regular haircut/highlight was the NoPoo. They changed the ingredients a few years ago and I found it very drying. Now, no Deva for me.

Many of us rotate products because our hair satiates, if we don't. I wet, rinse out and style every day--seldom use any one product more then twice a week.

If your hair is drying out during the day, it's "porous." It could be a result of the "over processing," heat damage or you may just have porous hair. You may want to think of "sealing." If you search, there are a lot of threads. Some people use oils or butters, I just use richer products. It's putting a layer of something really rich that will take a while to be absorbed and help your hair retain the moisture. Some use a leave in first and then seal, others seal and then put in their other products.
Originally Posted by kathymack
Yeah, I definitely think you're right about a trim - my ends could definitely benefit, as well as having my choppy layers fixed up by my new stylist would probably help with the way my hair lays/grows in general. I've never done a DT or PT so I think I need to experiment. If you could recommend some other good products/lines for me, that would help. I really don't know of much else besides Redken and Deva, the ones I've been using for the past year or so. I know I can't use drugstore products, like Pantene because they hurt my scalp.
My hair is definitely porous from highlights I got on top of demi-permanent color about 7 months ago. All of my natural color that's grown out is healthy, so I do agree that gradually cutting away the old color will help a lot. Is it possible though that sealing - using the buttery/oily products - will weight down my hair at all? Thanks for your advice! Very helpful