At puberty, sex hormones tend to increase in the body, and i..
Added 2022-10-04 03:18:12 +0000 UTCAt puberty, sex hormones tend to increase in the body, and in the process, the melanin, which is responsible for skin and hair colour, would also be produced. Melanin production alongside the sex hormone — oestrogen for women and testosterone for men — makes the penis and labia to darken.
