Forehead Lines: Botox vs Threads vs Ulthera — What Works Best — VERZO CLINIC Bangkok

TL;DR: Dynamic lines appear only when you raise your eyebrows or express. Static lines are visible even at rest. Dynamic lines respond well to Botox alone; static lines need additional treatments like threads, biostimulators, or devices.

Written by Dr. Waleerat Thaweebanchongsin, licensed aesthetic medicine specialist with over 10 years of specialized experience. VERZO CLINIC near BTS Ekkamai. Free consultations via LINE @verzo.

Last updated: April 2026

Frequently Asked Questions

What is the difference between dynamic and static forehead lines?

Dynamic lines appear only when you raise your eyebrows or express. Static lines are visible even at rest. Dynamic lines respond well to Botox alone; static lines need additional treatments like threads, biostimulators, or devices.

How many units of Botox do forehead lines need?

Forehead lines typically require 10-20 units of Botox, depending on muscle strength and desired effect. The frontalis muscle needs careful dosing to avoid brow heaviness. Dr. Waleerat customizes dosing based on your anatomy.

Can threads treat forehead wrinkles?

Yes, Ruby No.5 smooth PDO threads inserted horizontally across the forehead stimulate collagen production, gradually improving skin quality and reducing static lines over 2-3 months. They work well for patients who want gradual, natural improvement.

When is Ulthera better than Botox for forehead lines?

Ulthera is better when lines are deep and static, skin laxity is the primary concern, or the patient wants to avoid Botox. Ulthera delivers focused ultrasound to the SMAS layer, tightening deep tissues and stimulating long-term collagen remodeling.

Can I combine Botox and threads for forehead lines?

Yes, this is an excellent combination. Botox relaxes the muscle to prevent deepening of lines, while threads stimulate collagen to fill in existing static lines. The combination addresses both the cause and the result.

How often do I need forehead line maintenance?

Botox needs repeating every 3-6 months, threads every 6-12 months, and Ulthera every 12-18 months. A maintenance plan combining these treatments at different intervals provides consistent results.