I have type 3a-3b curls how can I control frizz and define my curls?

4 Answers

The best way to choose ingredients/products is by hair properties and not curl type (it's transient depending on product, technique, dewpoint, etc.) Here's a link to help you with yours http://livecurlylivefree.com/curly-hair-basics/ Once you determine your properties, go on curl talk and look for others with similar hair. See what they use and do. It's the best way to start.
I have 3a/3b hair.  Was told by one hair dresser years ago, that I had a lot of hair, but it was fine.  Then told it was coarse.  To define my curls, I always use ReCoil.  The key to not getting crunchy hair (hate that) and softer hair (love that)--is using a smaller amount. I apply a small amount (you have to experiment) to the palm of my hand--then I spread it between both hands & apply to hair.  This is the only product that really truly defines my curls.  Just don't use too much or it's grossly crunchy looking and feeling.   In the higher humidity I also add a little oil to soften & take away the frizz.  I used Macadamia Oil--it works the best on my frizz, but didn't like the Dimes... & other chemicals in it that most oils have.  I have Redken Diamond Shatterproof now.  Not crazy about the applicator dropper, and it doesn't work as well as the Macadamia one.   I may buy that one again because I don't use the oils that much anyway.  Oils help the frizz though.  
DEFINE: I would say for you to buy LOREAL PARIS EVER CURL, the whole line is amazing adds definition to your curls, gives shines, and has no sulfates. FRIZZ: What you can do is buy a paddle brush, it elimnates frizz and gives your curls a smooth look. Also you can buy an anti-frizz serum, that will add shine and keep the frizz away. 
It seems like your problem is styling your hair.  I use a lot of CURLS products such as the goddess curls gel and the cashmere jelly gel. Both products are really good even though I prefer the goddess curls gel better. Before using this, I use their leave-in conditioner that comes in a spray bottle bottle and is a liquid, then apply the Shea moisture smoothie and lastly put one of the gels. The gel works really good in taking away frizz. My hair type is also 3b and experienced a lot of frizz too before I started using the CG method.  I never used gel until this year because I thought it was bad for your hair and was hesitant to use it.  Surprisingly, I saw a decrease in frizz and better results in my curls.  It helps hold the curl in your hair when your hair is wet and isnt as bad as you may think.  When you wash your hair, style, etc. you should section your hair to apply the product. It will make sure each section of your hair has enough moisture and not just certain parts which is what I once had a problem with. And to decrease frizz, the 2 days out of the week when you wash your hair, you should twist each section after styling them. Then put a bonnet over your head.  Take out the twists the following morning. Another tip: If you use shampoo, you should consider stopping using it and see how it works out for you. I stopped using shampoo and my hair looks way better.