Can't seem to find any info on trimmers for trimming your hair, all I've really found out is that most electric razor aren't meant for head hair and aren't the same used at barbers or hair dressers. The electric razors I've had don't cut my hair very well at all ans barely work the add ons for trimmer length don't work at all. I can shave my face with them fine but they don't cut my hair on my head. I don't want to shave my head only trim it.

I can't find any info online it's ridiculous I just get bald head razor. Does anybody know?