In even more basic terms, as women age, their estrogen levels decrease. Testosterone, meanwhile, causes us to sprout shrubbery where men have it, in particular on our faces.
"As female hormones normally decline with age, and women's male hormone levels (yes, all normal women have a small amount of male hormone) remain constant, the hair follicles in male distribution respond to the relatively greater amount of male hormone by growing hair in the beard area and losing it on their scalp — just as men do as they get older," says Neal Schultz, founder of DermTv.com and creator of BeautyRx by Dr. Schultz.
The most common spots where you'll notice hairs: the chin, cheeks, and the upper lip. Laser hair removal is a pretty surefire way to get rid of them, as are waxing and threading, but there's no magic potion or silver bullet. With laser hair removal, a laser zaps a hair follicle with heat, destroying it. Meanwhile, medical electrolysis devices "destroy hair growth with a shortwave radio frequency after a thin probe is placed in the hair follicle," per the FDA. The hair is then plucked out.
"The most effective way to eliminate unwanted hair in the nose or on the chin is with a laser. This is the only treatment modality available that can permanently eliminate unwanted hair. Thirty minutes of numbing cream will make the treatment comfortable and pain-free," says Kristina Goldenberg of Goldenberg Dermatology in New York City.
But, you're thinking, every drugstore is crammed with creams promising hairless glory in mere minutes. Yes, but. There's always a but, you see. "Over-the-counter options are generally limited to depilatories, which break down the chemical bond in hair follicles so they are weak enough to rub off. Depilatory creams and gels can be irritating to gentle facial skin and should be used with caution," says Nazarian.
Friends of mine take a razor to their faces, which sort of freaks me out. But doctors say it's actually an easy way to get results.
"Shaving is safest but less efficient because it must be repeated frequently and is 'unfeminine,' so many women object even to the idea. One thing to note: Shaving does not make the hairs thicker or coarser," says Schultz, dispelling a common myth. "Electrolysis is effective but very time-intensive and sometimes causes scars. Truthfully, there is no perfect method of hair removal other than [by a] laser."
There are plenty of home devices available that zap unwanted hairs. But, says Schultz, resist the lure of the tweezers. "Do not pluck them," he says, especially when it comes to the hairs in your schnoz. "That can cause an infection by the bacteria that normally live inside the nose."
Concurs Nazarian: "Stick to shaving, or one of the permanent solutions to hair removal, like laser or electrolysis."
If you're loath to go the Gillette route, you can try Vaniqa, available by prescription. It's "a product that's available for women with unwanted hair. It slows hair growth in the areas in which it is applied. It has to be used for several weeks before a significant result becomes apparent. Unfortunately, no product offers a permanent solution," says Goldenberg.
Which means, for all intents and purposes: Hair today, and hair tomorrow.