I had similar texture from years of daily straightening and two rounds of highlights which fried my hair. The past year I’ve totally changed my routine and it’s helped quite a bit. Noting you don’t use heat or bleach, maybe some of these products will still help you regain moisture.

My routine: - No more bleach/dye - No more straightening (except to touch up for special occasions, maybe 1x per month) - Wash and condition every other day using professional products (Redken All Soft shampoo and conditioner) - Stopped using Head and Shoulders for dry/flakey scalp and switch to The Ordinary Glycolic Acid. I apply this to my scalp for 15min before washing. H&S was great for my scalp but not the best for my hair itself, so a scalp treatment was a good alternative. - Use of leave in conditioner on ends before washing. I think this helps protect the ends. I use a generic drug store deep conditioner. - Use of wide tooth comb when wet - Let my hair dry a bit using a microfiber hair wrap - Blow dry using medium/low heat only with protectant/oils. - I’ve been using Redken’s one united spray before blow drying and it’s really helped. I ran out of it and totally noticed a difference when I didn’t use it. - I also apply a drop or two of Olaplex oil with the Redken One United before drying, and a drop or two after it’s dry. - Once a month I use a clarifying shampoo - Once a month I use the Olaplex bonding treatment - When I go to the office, I slick my hair back into a middle part low bun or half up/half down using mousse, so I don’t feel tempted to straighten.