You wear multiple layers of sunscreen. You can't go a day without your favorite antioxidant serum. Retinol is your BFF. Injectables might just be a logical addition to your anti-aging regimen -- even if you don't have wrinkles.

"It's about preserving what you have," says Marmur. "Wouldn't you be happy to stay like this for 30 years?" And when it comes to preventative injectables, sometimes the results look like nothing at all. "Every person who comes to my office wants to look natural," says Marmur. "And I tell everyone, my job is to underwhelm you."

If the only thing holding you back is fear of what other people will think, then it's time to get over it. You're doing this for you, and you don't have to tell anyone. Plus, according to Galderma, 4.4 million women in the US have tried fillers or toxins, and 2 million are routinely using them. You'll be in good company.

And anything that makes you feel more confident shouldn't be considered frivolous. "I reassure [patients] that these treatments to improve the appearance or reverse signs of premature aging are, in fact, tightly connected to positive self-image and self-esteem," says Shamban.

If none of the aforementioned reasons apply to you, then preventative treatment might not be right for you -- and a doctor may even turn you away. "There are a lot of reasons to say no," says Marmur. "If I don't think I can improve upon perfection, then no."