Oh, dear.  It is a challenge to have curly/wavy hair.  It just doesn't behave like straight hair.
I've never used pantene, so I can't help w/that.
I recommend applying warm sesame oil to your scalp before washing.  Be very gentle as you massage the scalp-not the hair.
Be sure not to pile your hair on top of your head when you shampoo.  Don't brush your hair, try finger combing it only after it is completely dry.  Let it air dry if you can and don't touch it until it is dry.  Instead of wrapping your wet hair in a towel, gentley squeeze the water out w/a towel.  I know its a little time consuming, but it works.  Do not turn your wet head upside down-this leads to frizz.
There are serums out there for frizzy hair, but I don't mind a little frizz 'cause that comes w/the type of hair.  I put gel in my hair from Ouidad's line.  She makes haircare for curlies and wavies.  I also use Jessicurl's styling products, also made for curlies and wavies.

Good Luck!  Let us know how it works out.

Frizzies can also be a sign of breakage from hair ties and rubber bands.  How do you pull your hair back/style it?  Do you blow dry it?

Besides the other great advice you can also try flouring, it is suppose to smooth the hair shafts and lessen frizz. Do this before shampooing/conditioning and oiling.

Mix together 1 cup flour and 1 cup cold water. Put this mixture this on your hair when it is dry, do not pile on your head but keep hair smooth. Leave on for 15-20 minutes, rinse in cold water.

Rinsing in cold water is essential, lukewarm, warm, or hot water will turn the flour into glue which will adhere to hair and scalp and be impossible to get out.

I believe this recipe came from:

http://www.recipegoldmine.com/

If you do a web search for ‘hair flouring’ you can find other information on the subject as well.

Hope this helps!