| During the first few months of infancy appear fine, short, unpigmented hairs called down hair, or vellus. |
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| Eruptive vellus hair cyst is a rare skin disease and is characterized by asymptomatic comedone-like papules on the anterior chest and limbs. |
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| Eventually, with age, the follicles may degenerate to produce vellus hair again, or shut down completely. |
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| Expression of keratins in steatocystoma multipleks, eruptive vellus hair cyst, and epidermoid and trichilemmal cyst. |
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| After injections are performed, subjects will return to the clinic for assessment of total, terminal and vellus hair density and cumulative hair thickness, as well safety. |
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