Botox Units Per Area: Standard Dosing and Practice Economics

The forehead requires 15–25 units, typically 20. Inject 4–5 sites across the frontalis in a grid pattern, spaced roughly 1 cm apart, staying 1–1.5 cm above the eyebrow to avoid brow ptosis. Deeper injection (into muscle, not dermis) ensures diffusion stays within the frontalis; superficial placement risks lateral spread into the orbicularis oculi and unintended brow lift. Dosing is relatively forgiving here—the muscle mass is large and the anatomy straightforward.

Glabella (Corrugator/Procerus)

The glabella is the workhorse zone and demands precision. Standard dosing is 20 units split between corrugator (12 units, two injections per side) and procerus (4–8 units, midline). The corrugators are deep and strong; underdosing leaves dynamic lines visible on frowning. The procerus is smaller; overzealous dosing can flatten the bridge and create an unnatural appearance. Inject corrugators at the medial brow, angled slightly lateral and deep into muscle. Procerus sits at the glabellar crease, midline, injected vertically downward. This zone shows results fastest (3–5 days) and drives patient satisfaction most visibly.

Crow's Feet (Orbicularis Oculi)

Crow's feet typically receive 12–16 units per side (24–32 total). Inject 3 sites per side in a lateral fan: one at the lateral canthus, one 1 cm superior, one 1 cm inferior. Stay lateral to the orbital rim to avoid lower-lid involvement and ectropion. The orbicularis oculi is thin and superficial; light dosing suffices. Many practices reserve crow's feet for patients requesting full-face treatment or those with significant lateral lines; isolated crow's feet treatment is less common.

Per-Unit Economics and Pricing

Botox acquisition cost for most independent practices runs $3.50–$5.50 per unit, depending on volume, loyalty program tier (Alle, Aspire), and manufacturer rebate structure. A 100-unit vial costs roughly $350–$550 landed; a 50-unit vial runs $200–$275. Practices typically price Botox at $12–$16 per unit retail, yielding a gross margin of 60–70% per unit after cost of goods.

A standard 60-unit full-face treatment at $14/unit generates $840 revenue and costs $240–$330 in toxin, leaving $510–$600 gross profit. Practices with higher patient volume or direct relationships with AbbVie/Allergan Aesthetics may negotiate lower per-unit costs, improving margin. Practices using generic alternatives (Dysport, Xeomin) face different unit-to-unit ratios: Dysport requires roughly 2.5–3 units per Botox unit (so 150–180 Dysport units for a 60-unit Botox equivalent), though pricing per unit is often lower.

Dilution and Reconstitution

Standard reconstitution is 2.5 mL normal saline per 100-unit vial, yielding 4 units/0.1 mL (40 units/mL). Some practices dilute to 2 mL (50 units/mL) for finer control or 3 mL (33 units/mL) for broader diffusion in larger muscles. Dilution affects needle gauge, injection volume, and diffusion radius—tighter dilution (higher concentration) allows smaller volumes and more precise placement; looser dilution spreads further and suits larger treatment areas. Shelf life after reconstitution is 4 weeks refrigerated; many practices reconstitute fresh vials weekly to ensure potency and reduce waste.

Variation by Patient and Outcome Goals

Male patients often require 25–30% more units than women, owing to larger muscle mass and stronger corrugators. Patients with prior toxin exposure may develop antibody resistance, requiring higher doses or longer intervals between treatments. First-time patients benefit from conservative dosing (15–18 forehead, 18 glabella, 12 crow's feet) to assess response; subsequent treatments can be titrated upward. Patients seeking "natural" results typically receive 40–50 units total; those pursuing aggressive smoothing may receive 80–100+ units across all zones.

Treatment results appear at 3–5 days, plateau at 10–14 days, and last 12–14 weeks on average. Practices should schedule follow-up consultations at 2 weeks to assess and adjust. Consistent retreatment every 12 weeks maintains results and builds patient loyalty; many practices offer package pricing (e.g., three treatments prepaid at 10% discount) to lock in recurring revenue.