@ 1st bold, no, girl. This is in return for all the laughs you've given me. Thank YOU.
@ 2nd bold, as I grow put my various damaged areas, I'm seeing the same thing with mine.
Ok, it would be helpful if you knew the name of the serum so I'd know how thick it is. Is it also a heat protectant, or are you just using it so your hair isn't 'naked'? Your hair is silky-textured, right? (I'm guessing from the way it reflects light) I think that's why whatever you use is just sitting on the surface.
I use the Sally's knock-off of the PM Super-Skinny Serum and Oscar Blandi heat protectant spray. It works up to 450 degrees and is, like,
invisible on the hair. I love it. I've seen it sold in a set with the dry shampoo. I like it because it's *for* fine hair, so they already know. My hair starts to look dirty within three days, I get a lot of use out of that dry shampoo.