Botox for Crow’s Feet: How It Works and What to Realistically Expect

Key takeaways

• Crow’s feet are caused by the orbicularis oculi: the muscle that encircles the eye and contracts every time you squint, blink, or smile. Botox relaxes that contraction, reducing the lines it creates.
• Botox works best on dynamic lines, those that appear with expression. Static lines at rest respond less dramatically, especially if they are well established. Multiple sessions help over time as the muscle relaxes consistently.
• The number of units needed varies. Most providers use 10 to 15 units per side for crow’s feet, though this is adjusted based on the depth of the lines and the strength of your orbicularis. Your provider assesses this at the You Review.
• Results appear over 7 to 14 days as the toxin takes effect. Most clients maintain results for 3 to 4 months before the muscle returns to full strength.
• The most important thing to get right: restraint. Over-treating crow’s feet can make the eye area look unnatural or puffy. The goal is a softer, more rested version of your own expression not a frozen one.

What causes crow’s feet

The orbicularis oculi is a circular muscle that controls blinking and squinting. Every expression involving the eye — smiling, laughing, squinting against sun — activates it. Over years and decades, those contractions etch lines into the skin at the outer corners of the eye. UV exposure accelerates the process by breaking down collagen and elastin in the skin, which is why residents of sun-intensive markets like Summerlin often see more pronounced crow’s feet at younger ages.

There are two types of crow’s feet lines:

• Dynamic lines: only visible when you are smiling or squinting. These respond most to Botox.
• Static lines: present even at rest, when the face is relaxed. These are often partially addressed by Botox but may need multiple sessions, or a combination with other treatments, to fully improve.

How Botox treats crow’s feet

Botox (and similar neurotoxins like Dysport or Jeuveau) blocks the nerve signal to the orbicularis oculi in the treated area. The muscle cannot contract with full force, which means the repetitive squinting motion that creates crow’s feet stops temporarily. As the skin gets a break from those contractions, the lines soften.

The injections are placed laterally at the outer edge of the eye, targeting the fan of lines that radiates outward when squinting. Treatment takes about 10 minutes.

How many units for crow’s feet?

Typical range	What affects the number	What it means
10–15 units per side (20–30 total)	Muscle strength, line depth, how wide the crow’s feet spread	Your provider assesses at the You Review; numbers are personalized
Lower end (8–10/side)	Finer lines, first-time patient, lighter muscle	More conservative start; can add at follow-up if needed
Higher end (15+/side)	Deep, established lines or strong orbicularis	More units to achieve adequate relaxation

Starting conservative and assessing at two weeks is often the right approach, especially for first-time clients. It is easier to add than to wait for over-treatment to wear off.

What results look like

Stage	What to expect
Days 1–3	Mild tenderness or swelling at injection sites; no visible change yet
Days 7–10	Muscle begins relaxing; lines start to soften when smiling
Day 14	Full effect visible; reassessment appointment recommended if needed
Months 1–3	Full results maintained; muscle gradually returns to strength
Month 3–4	Most clients notice return of movement; time for maintenance

The Summerlin sun factor

Las Vegas and Summerlin average over 310 sunny days per year. The outdoor lifestyle here — hiking Red Rock Canyon, playing golf, time by the pool — means cumulative UV exposure is high. UV accelerates the development of static lines and breaks down the collagen that makes dynamic lines less visible when the face is at rest. For Summerlin clients, Botox maintenance and consistent SPF are a natural pairing. Botox addresses the muscle component; sun protection slows the skin damage that deepens the lines.

How our Summerlin team approaches crow’s feet

Christine and the Summerlin team start every crow’s feet consultation by understanding the client’s goals — how expressive they want to remain, whether they prefer a lighter or more significant correction — and then assessing the strength of the orbicularis and the depth of the lines. The aim is always a natural result: lines that soften noticeably but that still move with the face. If you are new to Botox, starting on the conservative side and returning at two weeks to assess is a common approach.

Crow’s feet Botox: Frequently Asked Questions

The bottom line

Botox for crow’s feet is one of the most effective and well-studied aesthetic treatments available. The key is doing it right: the right number of units for your anatomy, conservative placement to preserve natural expression, and maintenance on a schedule that works for your lifestyle. A complimentary You Review at OrangeTwist Summerlin is where that conversation starts.

Ready when you are

Book a complimentary You Review and we will assess the area, explain what is realistic for your anatomy, and give you a clear picture of what to expect.

Visit us in Summerlin