During which phase of female sexual maturation does axillary hair typically develop?

Axillary hair typically develops during the phase of female sexual maturation that occurs simultaneously with breast development. This stage is part of the overall changes women experience during puberty, which involves a sequence of physical developments attributed to increasing levels of estrogen.

As the breasts begin to develop—indicating the onset of sexual maturity—other secondary sexual characteristics also start to emerge. This includes the growth of pubic hair and axillary hair. The simultaneous development reflects the complex interplay of hormones that drive various changes in the body during this critical phase of maturation.

The timing of axillary hair growth is closely linked to the maturation process of other secondary sexual characteristics, making it more accurate to say these changes occur at the same time rather than in strict sequence before or after one another.