In Chinese medicine it's called a Plum Blossom Hammer. Google search will turn up lots of info.
I've just got an eraser with one sewing needle, and just started using it.
There was some discussion here recently about shampoo's, citing some study which compared ketoconazole (Nizoral), Piroctone Olamine, and Head & Shoulders.
The general upshot of it being that H&S leads to thinner hair in the long term, compared to the other 2.
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