I've just come back from a short trip to Paris. During the weekend, I nipped into a pharmacy. My French isn’t that good, but I swear I saw some eyebrow shampoo.
On the journey back, it clicked. I don’t specifically wash my eyebrows when washing my hair (I’m a scruffy git), but other people groom better than me. Any shampoo, when washing eyebrows, risks running into the eyes, and with ordinary shampoo, that hurts. So eyebrow shampoo is probably painless to the eyes.
Anyone use the stuff?