For 20-somethings, there’s no treatment more popular—or controversial—than Botox. Need proof? According to the American Society of Plastic Surgeons, botulinum toxin procedures have increased 28 percent since 2010 amongst 20 to 29-year-olds.

When it comes to Botox and filler, there’s a fine line between targeted tweaks and doing too much too soon. Here, in-demand experts share their guidelines for women in their 20s.