J.S.
I am a hairsylist and a mom of a fine haired curly head and here are my recommendations to you- without actually seeing how your hair looks.
Regular hair trims is key! If you don't get your hair trimmed at least every 3-4 months you wil have frizz instead of curl and lots of tangles. Tangles is the key to knowing when you need a haircut. If your hair is healthy you shouldn't have any issues with tangles. (you will have a couple of very small tangles but not the big ones) If you have a lot of tangles then your hair needs some repair as well as a good trim. Make sure you go to someone you trust not to cut too much off. If your hair still has a lot of tangles after a good trim then you have more damage than you are willing to cut off so get it trimed 1x every 6wks till its not that way anymore. This way you won't feel your hair keeps getting shorter
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You need to use a deep conditioner that strengthens your hair to keep from further breakage at least 2x month. This product should make your hair hard not soft after use (I like Redkin Extreme Force) so you will need to follow it up with a regular conditioner. Even though your hair is fine I would still recommend you use moisturizing shampoo and conditioner because of your curls. If you don't have enough moisture in your hair it will frizz. If it seem to be weighting your hair down to much use a moisturizing shampoo and a regular conditioner. Stay away from products for oily hair they will make your hair dry out more. (I like Redkin AllSoft shampoo and conditioner)
You shouldn't need a lot of styling products if your hair is healthy. A mousse is going to be light weight and non oily as well as a product that is for curl definition stay away from gels, pomades, waxes or anything like that. Those are way too heavy.
Last of all... products can build up on your hair so it is important to use a clarifying shampoo once in a while- no more than once a month. This will get rid of the build up and allow your products to work just as good as they did the first time you used them.
I hope this helps and healthy hair takes effort. You do need to take some time to baby it. Also to comb out tangles start on the ends and work your way up to the roots so that you will not break the hair anymore.
BTW baby shampoo has a high ph and will frizz the hair.