I had the same problem. It took a while for the curls to return, but my hair has never been the same. It isn't as thick or as curly. I can't grow it long anymore because it looks stringy, so I normally wear it at my shoulders. I just had another baby three months ago so I got it cut shorter with lots of layers. My curls haven't disappeared like last time, but it's more wavy than curly. I suppose once my hormones get back to normal and I've stopped breastfeeding then my hair will start growing in normal again. It just takes a lot of time to notice the results.