It’s no secret ? men are getting more Botox now than ever before.

According to a recently released study from the American Society for Aesthetic Plastic Surgery, the number of men getting botulinum toxin injections (commonly known by their brand names as Botox, Dysport and Xeomin) totaled 453,281 in 2016 ? adding up to 9.9 percent of total procedures done on both men and women. In 2015, a study from the American Society of Plastic Surgeons said that the number of men getting injections increased by 337 percent since 2000.

With this concrete evidence that men are getting more Botox than ever, we couldn’t help but wonder why. And do their reasons for choosing the treatment differ from those of women?

HuffPost reached out to five plastic surgeons based in New York, Los Angeles and San Francisco to learn more about the men who are getting Botox and the reasons they’re doing it.

Men who get Botox are generally 35 to 65 years old.

The five doctors we spoke with all agreed on a few things – the men visiting their practices for toxins are typically 35 to 65 years old; they’re most often white-collar professionals in the business, law, fashion or art world with higher incomes; and they’re primarily getting toxins injected into their brows and around their eyes around three to four times a year. But that’s about where their similarities stop.