I used to have easy-to-tame, straight-ish with a very slight wave, hair. For years I have worn it in a short-to-medium bob which I had cut every 3 months or so. Any random shampoo would do and a simple blow-dry with a round brush would make it presentable.
Now I'm 50, have gradually noticed that no matter how carefully I blow dry, within half-an-hour the hair gets simultaneously unflatteringly flat/thin-looking in some areas, yet with weird unflattering waves in other areas. Also it is more greasy at the roots but more frizzy elsewhere. Yesterday evening we took a family selfie at the end of a day out and I was somewhat horrified by my generally haggard appearance, of which the worst was my flat-yet-wavy-yet-frizzy hair.
Are there any magic products or a better hair-care regime?