Botox Injections (Botulinum Toxin)

Botox (botulinum toxin) injections deliver an appropriate dose of Botulinum Toxin Type A to relax the muscles that create dynamic expression lines, and to refine the facial contour — for example, slimming the jaw for a more tapered face. Results generally appear within 3–7 days and last around 4–6 months, with no downtime. Results vary by individual.

What can Botox help with?

By relaxing the specific muscles your doctor selects, Botox can address both aesthetic goals and targeted concerns:

• Softening dynamic expression lines — forehead, crow’s feet (outer eye corners), and frown lines between the brows
• Refining facial contours — masseter (jaw) slimming for a more tapered face, brow lifting, and lifting the corners of the mouth
• Reducing sweat — in the underarms for people with excessive sweating
• Targeted lifting — for a smoother, more balanced-looking face

Which areas can be treated, and how many units?

Each area uses a different number of units depending on muscle size and strength. The table below shows approximate values; your doctor will assess and tailor the dose to your individual facial structure:

How does masseter Botox (jaw slimming) work?

Masseter Botox is injected into the jaw muscle (masseter) so that a muscle enlarged by chewing or teeth grinding gradually decreases in size, making the jawline look slimmer and more defined. Changes typically begin within 2–4 weeks and become more pronounced with continued treatment on the schedule your doctor recommends. Beyond the aesthetic benefit, it can also help relieve jaw pain caused by teeth grinding.

How does Botox work?

Botulinum toxin works by blocking the signal from nerves to the muscles in the treated area, so the muscle relaxes and moves less. Wrinkles caused by repeated movement therefore appear softened. The effect is temporary and gradually returns to normal as the product wears off, so repeat treatment is needed on schedule.

Who is a good candidate for Botox, and who should avoid it?

Good candidates include people with dynamic expression lines, those who want a slimmer facial contour or who have jaw/teeth-grinding concerns, and those who want to manage wrinkles from an early stage.

Tell your doctor or avoid treatment if you are pregnant or breastfeeding, have certain muscle or nervous-system conditions, or have a history of allergy to the product’s ingredients. Your doctor will always take your history and assess suitability beforehand.

What are the steps for a Botox treatment at Onnyx Clinic?

1. Consultation and assessment — your doctor discusses your goals and examines your facial muscles
2. Treatment design — injection points and unit dose are tailored to you
3. Injection by a doctor — takes about 15 minutes
4. Aftercare — care guidance is provided along with a follow-up appointment

How long until Botox works, and how long does it last?

Changes generally begin within 3–7 days, with full results at about 2 weeks. Results last around 4–6 months, depending on the area, the number of units, and individual response:

Is Botox dangerous? What are the side effects?

Botox is safe when injected by a doctor using a Thai FDA-certified product at an appropriate dose. The side effects most commonly seen are mild and temporary, such as redness or bruising at the injection site, which usually improve on their own within a few days. The most significant risk is injection by a non-doctor or the use of substandard products, so you should choose a licensed medical facility.

What is Botox resistance?

Botox resistance is a condition in which the body develops antibodies against the protein in the product, so injections become less effective or wear off sooner. It is uncommon and is often linked to injecting too frequently or using high doses continuously. Spacing treatments as your doctor advises and using an appropriate dose helps reduce the chance of it occurring. If you suspect resistance, consult your doctor.

How to spot genuine Botox and a safe injection

Safety depends on the facility, the doctor, and the product — not just the price. Before you decide, check that:

• The injection is performed at a licensed medical facility and the procedure is done by a doctor
• A Thai FDA-certified botulinum toxin is used
• You are wary of prices that are unusually low, which may indicate a substandard product
• There is clear assessment and before- and after-care guidance

How is Botox different from filler?

Both are injectable treatments, but they address different concerns; many people use them together for a balanced result:

Which Botox brands does Onnyx Clinic offer?

We select several Thai FDA-certified botulinum toxins, from both Korea and Europe, to suit a range of goals and budgets. Each brand has slightly different properties and duration of action. You can see the options and pricing in the table below, and your doctor will help recommend the brand that suits you on your consultation day.

How to prepare before a Botox treatment

• Tell your doctor about any medical conditions, medications, and allergies
• Stop medications/supplements that may increase bleeding, as advised by your doctor
• Avoid alcohol beforehand and arrive with clean skin

Aftercare following a Botox treatment

• Gently move the muscles in the treated area during the first hour, as your doctor advises
• Avoid lying flat or bending your head down for about 4 hours
• Avoid massaging or pressing the treated area for the first 24 hours
• Avoid strenuous exercise, high heat, and saunas for the first 24 hours
• Avoid alcohol early on; if you have any questions, you can consult your doctor

Why choose Onnyx Clinic for Botox?

Injected and assessed by a doctor, using Thai FDA-certified products, with treatment designed for each individual, transparent pricing, and close before- and after-care — for results that look natural and are safe to medical standards.

References

• Thai FDA (อย.) — fda.moph.go.th
• American Academy of Dermatology — aad.org
• U.S. Food & Drug Administration — fda.gov