Thicken

What kind of color did you use, what was the vol. of developer...was it the kind that comes with the box kit? And how long did you leave it on? Did it fall out or break off? Normally, this isn't a permanent hairloss........

You mean your hair got thicker after you colored it? you can always apply a clear gloss to add shine and to somewhat thicken it....it like coats the hairshaft and makes it feel and look thicker without the color.