Dear Mr. Alice: I have to have the hair on my head cut every month or so, but I never have to have my eyebrows trimmed. What’s up? — Maryanne, Del Mar
It’s the miracle of follicles, Maryanne, the cavity in the skin from which each hair shaft emerges. The size and shape of the follicle determines the length, thickness, and curliness of your hair. The shorter it is, the shorter the hair shaft; the narrower it is, the thinner the hair. Eyebrows grow from follicles that are shorter than those on your head, so your eyebrows don’t grow as long. The size and shape of your hair follicles, of course, are determined by your genes.
Dear Mr. Alice: I have to have the hair on my head cut every month or so, but I never have to have my eyebrows trimmed. What’s up? — Maryanne, Del Mar
It’s the miracle of follicles, Maryanne, the cavity in the skin from which each hair shaft emerges. The size and shape of the follicle determines the length, thickness, and curliness of your hair. The shorter it is, the shorter the hair shaft; the narrower it is, the thinner the hair. Eyebrows grow from follicles that are shorter than those on your head, so your eyebrows don’t grow as long. The size and shape of your hair follicles, of course, are determined by your genes.
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