Arm Slimming with Botox in Orange County
Neurotoxin injected into the deltoid to soften shoulder bulk and narrow the upper arm silhouette. Performed personally by Dr. Amir Mortazavi, MD.
The deltoid caps the shoulder. When it's well-developed — often from training — it widens the shoulder line and adds visual bulk to the upper arm. Partially relaxing the muscle reduces that bulk over time, producing a narrower, softer contour.
This is a newer application, and worth understanding as one.
Neurotoxin for muscle slimming is well established in the masseter and increasingly in the trapezius. Use in the deltoid is off-label and not supported by a substantial published literature. Dr. Mortazavi performs it based on clinical experience rather than established protocol, and it is dosed conservatively for that reason.
Off-label use of an approved medication is legal and common in medicine. But you should know when you're in well-mapped territory and when you aren't — and here, you aren't. Any practice presenting deltoid slimming as a routine, well-studied treatment is overstating what's known.
The functional consideration. The deltoid is a primary mover. It lifts your arm, holds it out to the side, and does most of the work in overhead reaching and carrying. Unlike the masseter or trapezius — where some relaxation is well tolerated — meaningful weakening here is noticeable in daily activity.
Treatment is therefore approached as partial softening rather than substantial weakening, with conservative initial dosing and adjustment at follow-up if warranted. Temporary reduction in shoulder strength or a sense of fatigue with overhead activity is possible and resolves as the effect wears off.
Not appropriate if you train seriously, play a sport involving overhead movement, or do physical work requiring shoulder strength. If your shoulder width comes from bone structure rather than muscle, this won't change it — and Dr. Mortazavi will tell you that at consultation rather than treating anyway.
What to expect: onset over one to two weeks, with visible change developing across several weeks as the muscle softens. Duration is typically three to four months.
Consultation required before booking. This isn't a treatment to buy from a product page without being assessed first.
Neurotoxin injected into the triceps to reduce bulk along the back of the upper arm. Performed personally by Dr. Amir Mortazavi, MD.
The triceps makes up the majority of upper arm mass. When well-developed, it adds width and definition to the back of the arm — desirable for some patients, and the opposite of what others want, particularly in sleeveless clothing. Partially relaxing the muscle reduces that bulk over several weeks.
This is a newer application, and worth understanding as one.
Neurotoxin for muscle slimming is well established in the masseter and increasingly in the trapezius. Use in the triceps is off-label and not supported by a substantial published literature. Dr. Mortazavi performs it based on clinical experience rather than established protocol, and doses conservatively for that reason.
Off-label use of an approved medication is legal and routine in medicine. But there's a difference between well-mapped territory and newer ground, and you should know which one you're in. Any practice presenting arm slimming as a standard, well-studied treatment is overstating what's known.
The functional consideration. The triceps extends the elbow — it's what straightens your arm, and it does the work in pushing, pressing, and lowering anything under control. Weakening it is more noticeable in daily activity than relaxing a jaw or shoulder muscle.
Treatment is approached as partial softening rather than substantial weakening: conservative initial dosing, with adjustment at follow-up if warranted. Temporary reduction in pushing strength or fatigue with repetitive arm extension is possible and resolves as the effect wears off.
Bulk isn't the only reason arms look heavy. Upper arm appearance is a combination of muscle, subcutaneous fat, and skin laxity. Neurotoxin only addresses the muscle component. If the concern is softness, fullness, or loose skin rather than muscular development, this treatment won't change it — and a different approach is needed. That distinction is made at consultation.
Not appropriate if you train seriously, play a sport requiring pressing or throwing strength, or do physical work involving repeated lifting or lowering.
What to expect: onset over one to two weeks, with visible change developing across several weeks. Duration is typically three to four months.
Consultation required before booking. This isn't a treatment to purchase from a product page without assessment.
What Is Arm Slimming Botox?
Arm Slimming Botox, also known as Deltoid Botox or Triceps Botox, is a specialized treatment that reduces the bulk of upper arm muscles for a more tapered, feminine, and slender appearance. Unlike surgery or fat removal, this procedure targets muscle activity to refine the silhouette naturally.
At Plump Medical Spa in Orange County, Dr. Amir Mortazavi, MD, delivers this advanced treatment with precision and safety for results that are subtle yet transformative.
How Does It Work?
Botox is carefully injected into the deltoid and/or triceps muscles
Muscle activity gradually relaxes
Over time, arms appear slimmer and more sculpted
Results last 4–6 months and improve with repeated treatments
Why Choose Plump for Arm Slimming?
Doctor-led injections only
Expertise in advanced Botox applications beyond traditional areas
Customized dosing for balance and natural results
Local authority in treatments few clinics provide in Orange County
What to Expect
Treatment Time: 20–30 minutes
Discomfort: Minimal, with tiny injections
Downtime: None — resume normal activity immediately
Longevity: 4–6 months, longer with consistency
Ideal Candidates
You may be a great candidate if you:
Want slimmer, less bulky arms
Desire more feminine arm contours without surgery
Find that working out makes your arms look larger, not smaller
Seek a non-invasive, low-downtime solution
Frequently Asked Questions
Is Arm Slimming Botox safe?
Yes. When performed by a physician, Botox is a safe and effective way to reduce muscle activity.
When will I see results?
Most patients see noticeable improvement within 4–6 weeks as the muscle gradually relaxes.
Will this make my arms weak?
No. Botox reduces excessive bulk without eliminating normal function. Activities of daily life and workouts are not impaired.
How many units are needed?
Dosage varies by anatomy, but most patients require 40–100 units per session depending on whether both deltoid and triceps muscles are treated.
How often will I need treatment?
Every 4–6 months for maintenance. Results often last longer with consistent treatments.
Does it hurt?
Discomfort is minimal. Tiny needles and optional numbing make the procedure very tolerable.
Can Arm Slimming Botox be combined with other treatments?
Yes. Many patients combine it with skin tightening or laser treatments for more dramatic arm contouring.
Is this available everywhere?
No. Few clinics in Orange County offer this treatment. At Plump, you’ll find physician-only expertise in this advanced procedure.