Botox Injections for Face Slimming, Hyperhidrosis, and Wrinkle Reduction: A Doctor Explains No Downtime, Immediate Effects, and Duration
For those concerned about a wide jawline, forehead wrinkles, or underarm sweat. Mona Aoyama Clinic doctors explain the effects of Botox injections by area, duration, costs starting from ¥17,800, and why there's no downtime.
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June 10, 2026
Improve your face, hyperhidrosis, and wrinkles with Boto injections – Doctor explains no downtime, immediate effect, and duration
Doctor explains effects, cost, and duration by area
"My jawline makes my face look big," "Perspirex doesn't work for my underarm sweat," "I'm starting to notice wrinkles on my forehead" – Boto injections are a treatment that can address all these concerns.
Boto injections (botulinum toxin preparations) temporarily inhibit nerve transmission to muscles and sweat glands, and are characterized by their ease of use, with virtually no downtime and a treatment time of 15 to 30 minutes. At our clinic, we offer in-person treatments (Tokyo, Aoyama) starting from ¥17,800.
- Boto injections are available for in-person treatment (Tokyo, Aoyama). From ¥17,800
- Combination with Perspirex for hyperhidrosis (online prescription) is also available
- Please start by consulting with us for counseling
1. What is Boto injection and how it works
Boto is an injectable drug using a protein called botulinum toxin, which temporarily blocks signals from nerves to muscles and sweat glands. When muscles stop moving, wrinkles improve, and when signals to sweat glands are blocked, hyperhidrosis improves. The effects are not permanent and naturally wear off after about 3 to 9 months.
✅ "Unnatural expressions" are a thing of the past. Currently, techniques for appropriate dosage and injection sites have been established, allowing for natural expressions while achieving effective results.
2. Effects, duration, and cost by area
| Area/Concern | Effect | Duration | Cost (Our Clinic) |
|---|---|---|---|
| Jaw (masseter) → Smaller face | Reduces masseter muscle size to slim the face. Also effective for teeth grinding. | 4-6 months | From ¥17,800 |
| Forehead/frown lines | Suppresses facial muscle movement to make wrinkles less noticeable | 3-6 months | From ¥17,800 |
| Crow's feet (corner of eyes) | Reduces wrinkles when smiling | 3-4 months | From ¥17,800 |
| Corners of mouth/gummy smile | Lifts corners of mouth / improves excessive gum display | 3-4 months | From ¥17,800 |
| Underarms/palms (hyperhidrosis) | Inhibits nerve transmission to sweat glands. Highly effective for hyperhidrosis with immediate results. | 6-9 months | From ¥17,800 |
3. Hyperhidrosis Boto – Differentiating from Perspirex
For armpit sweat and hyperhidrosis treatment, our clinic offers two options: Perspirex (online prescription) and Boto injections (in-person).
| Comparison Item | Perspirex | Hyperhidrosis Boto |
|---|---|---|
| How to receive | ✅ Online prescription, use at home | Requires clinic visit |
| Duration of effect | Maintained with continuous use (requires use about once a week) | ◎ Lasts 6-9 months with one treatment |
| Cost | ◎ Prescription fee only | From ¥17,800 (our clinic) |
| Who it's for | Those who want to try it first, keep costs down, or have mild to moderate hyperhidrosis. | Those for whom Perspirex is insufficient, or who want longer-lasting, easier relief. |
💡 Recommended sequence: First, try Perspirex with an online prescription → If effects are insufficient after 2-4 weeks of use, switch to Boto injections (in-person). One treatment before summer can last 6-9 months, covering the entire summer.
4. Treatment flow and downtime
- Counseling and diagnosisWe will ask about your desired areas and concerns. The injection amount and location will be determined.
- Injection (15-30 minutes)Injections are given to the target area with a fine needle. Anesthetic cream may be used.
- Precautions for the day of treatmentAvoid strenuous exercise, alcohol, and saunas. Do not lie face down (for 4 hours).
- Onset of effects (3-14 days later)Muscle movement will gradually be suppressed and effects will appear.
There is almost no downtime, and you can return to your daily life immediately after the procedure. Mild redness and swelling may occur at the injection site but will subside within a few hours to a few days.
5. Frequently asked questions
It varies by area, but for jawline and expression lines, it's typically every 3-6 months, and for hyperhidrosis, every 6-9 months. Some people find that with repeated treatments, they can maintain the effect with smaller amounts.
If the appropriate amount is injected at the correct location, your expression will not become stiff. At our clinic, we prioritize natural results when determining the amount to be injected.
First, please check your usage (night, dry skin, 2-3 times a week). If it's still not effective enough with correct usage, Boto injections are an effective option. They have a lasting effect of 6-9 months, and one treatment before summer can cover the entire season.
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| Clinic Name | Mona Aoyama Clinic |
| Consultation Format | Online consultation (nationwide) / In-person consultation (Tokyo, Aoyama) |
| Location | 3F D Building, 1-10-3 Minami Aoyama, Minato-ku, Tokyo 107-0062 |
| Nearest Station | 5-minute walk from "Aoyama-itchome Station" on Tokyo Metro |
| Online Consultation | 24-hour reception / Same-day shipping available (for payments made by 4 PM) |
For Boto injection consultations, contact Mona Aoyama Clinic.
Smaller face, wrinkles, hyperhidrosis. We offer in-person treatment (Tokyo, Aoyama). From ¥17,800