Botox has long been a go-to for smoothing fine lines, but in recent years, a new trend has emerged: preventative Botox. Instead of waiting for wrinkles to appear, people in their 20s and early 30s are opting for small doses early on to stop lines before they become permanent. But does the science back it up?

How Does Preventative Botox Work?

Botox (botulinum toxin type A) works by temporarily blocking acetylcholine release at the neuromuscular junction, which prevents muscle contractions.

• Acetylcholine is a neurotransmitter (a chemical messenger) that signals muscles to contract.
• The neuromuscular junction is the connection between nerve cells and muscle fibers where this signaling occurs.

When Botox is injected, it prevents the release of acetylcholine, meaning the targeted muscles receive fewer signals to contract. As a result, the skin above these muscles doesn’t crease as much, which helps delay the formation of dynamic wrinkles (wrinkles caused by repeated facial movements like frowning or squinting).

Over time, if certain muscles are used less frequently, they can slightly weaken, which further slows the development of deep-set wrinkles. This is why preventative Botox is believed to work—not because it erases existing wrinkles, but because it reduces repetitive muscle movements that contribute to wrinkle formation over time.

When Should You Consider Preventative Botox Treatments?

There’s no specific age when Botox becomes "necessary," but dermatologists often suggest considering it when fine lines remain visible even when the face is at rest. These early-stage static wrinkles indicate that collagen breakdown has begun. Botox can slow this progression by limiting excessive muscle movement.

Does Science Support It?

Studies suggest that Botox can delay wrinkle formation when used over time. A 2006 study published in Archives of Facial Plastic Surgery examined identical twins, one of whom had received regular Botox treatments for 13 years while the other had not. The results? The treated twin had significantly fewer lines and smoother skin, supporting the idea that Botox can have a long-term preventive effect when started early.

Is It Right for You?

Preventative Botox can be an effective tool for maintaining smoother skin, but it’s not a one-size-fits-all solution. Factors like genetics, sun exposure, collagen production, and skincare habits all play roles in how skin ages. If you’re considering it, consult a board-certified provider to ensure conservative dosing—you want to soften movement, not freeze your expressions entirely.

At the end of the day, Botox is just one piece of the puzzle. A high-quality skincare routine, consistent sunscreen use, and a healthy lifestyle will do just as much (if not more!) to keep your skin youthful in the long run.

Would you consider starting Botox early, or do you think it’s unnecessary? Let’s chat in the comments!