Hair is starting to go thin/not curling as much as it used to.

So I was born is wavy-curly hair (I had my Mum take a look at the categories and she estimated that my hair was 2B - Wavy Curvy), though sometimes I used to get little cute ringlets that would bounce. :P
Since late spring or summer, my hair hasn't been as curly like it used to. My hairdresser pointed this out to me last month and it's been bothering me for a while, so I was wondering if I could get help in making it curlier again. It seems to leaning towards 2A or the like (I'll try to post pictures if I can). Also my hair tends to frizz really easily. >.<
Hair History: Until 2010, I never did anything extreme to my hair, never wanted to. But when my Grade 12 Graduation was coming up, I decided I wanted to try doing something actually different with my hair. So on the day of my Graduation I had my hairdresser give a side-swept fringe (bangs), because I've always wanted to have a fringe. I still have them.
- Last year(ish), I decided to cut my hair shorter for the first time. My hair used to be almost hip-length, but I had it cut to my shoulder-blades.
- During late March/early April, I decided to have my hair professionally dyed red (natural hair colour is light brown with gold highlights), because I've always been a huge fan of red hair and this was around the time when the game "Mass Effect 3" was being released, so I kind of wanted to celebrate it by dying it the same colour as Female Shepard. I haven't dyed it since then.
Hair Routine: I try to have a shower every 2 days. Our family tries not to use expensive products, so the shampoo and conditioner I use is "Head and Shoulders" (my Dad and I tend to have itchy scalp). When I'm out of the shower, I then use a product called "Pureology: Antifade Complex" leave-in conditioner and scrunch the bottom of my hair. Then I take a very small straightening-iron to straighten out my fringe. I don't straighten anything else.
Thank you.
Since late spring or summer, my hair hasn't been as curly like it used to. My hairdresser pointed this out to me last month and it's been bothering me for a while, so I was wondering if I could get help in making it curlier again. It seems to leaning towards 2A or the like (I'll try to post pictures if I can). Also my hair tends to frizz really easily. >.<
Hair History: Until 2010, I never did anything extreme to my hair, never wanted to. But when my Grade 12 Graduation was coming up, I decided I wanted to try doing something actually different with my hair. So on the day of my Graduation I had my hairdresser give a side-swept fringe (bangs), because I've always wanted to have a fringe. I still have them.
- Last year(ish), I decided to cut my hair shorter for the first time. My hair used to be almost hip-length, but I had it cut to my shoulder-blades.
- During late March/early April, I decided to have my hair professionally dyed red (natural hair colour is light brown with gold highlights), because I've always been a huge fan of red hair and this was around the time when the game "Mass Effect 3" was being released, so I kind of wanted to celebrate it by dying it the same colour as Female Shepard. I haven't dyed it since then.
Hair Routine: I try to have a shower every 2 days. Our family tries not to use expensive products, so the shampoo and conditioner I use is "Head and Shoulders" (my Dad and I tend to have itchy scalp). When I'm out of the shower, I then use a product called "Pureology: Antifade Complex" leave-in conditioner and scrunch the bottom of my hair. Then I take a very small straightening-iron to straighten out my fringe. I don't straighten anything else.
Thank you.

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This has improved my hair's curliness by a lot, along with using a new product for my hair called KMS California - Curlup Curling Balm.
@connemara22: No I don't think I have anything like that. xD