Diffrence between 20 unit botox and 40 unit?

Im trying to decide which package to buy 40 or 20 units. Im trying to decide which one to buy.

Doctor Answers 33

Botox package pricing

Each individual is different in how many wrinkles are present and which areas are affected. Some people only need the frown lines ("11's") treated while some need the forehead and frown lines or only the forehead lines. Therefore, each individual's Botox needs are different. Usually 25 u Botox are needed for frown lines, but sometimes it's 40 units - depends on the size of the muscle. larger muscles need more Botox. It's best to pay for Botox according to what you need rather than buy a set number of units which may be more or less than you need. You will probably overpay in most scenarios.

Cleveland Dermatologic Surgeon
4.8 out of 5 stars 20 reviews


You should definitely see first how many units you’ll need for your particular concern. 20 units may be enough, or you might need more - it all depends on your concern. I suggest you also read the fine print of your offer. See if you need to use all of your units at once, or if you can save the unused for later. For your safety and satisfaction, go to an injector who you can trust, rather than one who’s the cheapest.

Leila Kasrai, MD, FRCSC
Toronto Plastic Surgeon
5.0 out of 5 stars 66 reviews


The amount of units required for a Botox treatment is determined by the number of areas to be treated.  A typical treatment will consist of 20 units of Botox per muscle acting area.  In other words, it is 20 units to treat the glabella (the area in between your eyebrows), 20 units to treat the forehead, and 20 units to treat the crows feet.  Hope this helps!

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Thank you for your question in regards to Botox. The number of units required are based on the number of areas you plan on treating. To be sure what is best for you, see two or more board-certified providers in your area for a complete evaluation to make sure you are a good candidate and that it is safe for you to have treatment. I hope this helps.

J. Jason Wendel, MD, FACS
Nashville Plastic Surgeon
5.0 out of 5 stars 183 reviews

Botox and Units

The amount or units of Botox that you need to have injected varies depending on how many areas that you want to have injected.  If you only want your glabella area injected then 20 units may be enough but if you want crow's feel or other forehead wrinkles injected you will need more units.  More important that the number of units is the PROPER placement of the Botox.  A smaller amount or units - "baby Botox" injected properly can look much better.  Please consult an expert.  Best, Dr. Green

Michele S. Green, MD
New York Dermatologist
5.0 out of 5 stars 78 reviews

How far do botox units go

How many units of botox or any other botulinum toxin you need is dependent on the areas treated, the strength of your muscles, your facial anatomy and the result you want. The original Botox Cosmetic studies used 20 - 25 units just for the glabella (the frown lines between the eyebrows) and 15 - 20 units for the crow's feet (the lines coming out from the eyes when you smile). Other areas treated like the forehead, chin, jawline, masseters and neck vary also. Patients with strong muscles who want full blockage of the movement may require more to get that effect. On the other hand, experienced injectors often use less to give a natural 'actress dose' so that patients can still make expressions but get subtle brow lift and fewer lines at rest.

So the person you need to ask is the (hopefully) expert board certified core cosmetic physician (ie dermatologist, plastic surgeon, facial plastic surgeon or oculoplastic surgeon) with whom you will have the procedure.

I hope this answer was helpful.  Best wishes

Heidi A. Waldorf, MD
New York Dermatologist
5.0 out of 5 stars 11 reviews


40 units will treat a larger  area. We often use 25 units in the glabella and 15 units in the rest of the forehead 

Stuart H. Bentkover, MD
Boston Facial Plastic Surgeon
4.5 out of 5 stars 25 reviews

Botox Units

I suggest you use the number of units needed for the type of muscle and shape you have. I suggest speaking to your physician for the best number.  Best, Dr. Emer.

Jason Emer, MD
Los Angeles Dermatologic Surgeon
4.8 out of 5 stars 196 reviews

20 or 40 ??

If the 40 units is a better deal, go for it!!!  You may not need at a single treatment but use the remainder in a few months, if that is allowed.  Your injector should be able to inform you about how much you will need during a single injection visit and let that guide your decision.  Best of luck.

Paul E. Goco, MD
Nashville Facial Plastic Surgeon
4.4 out of 5 stars 7 reviews

Commoditization of Botox

Though many have tried to commoditize botox, it is still a drug and requires someone with great expertise to select whether, where and how much to inject. Such a choice as you suggest is totally inappropriate. You need to seek the advice from an expert injector, discuss your desires and follow their advice. (See ExpertInjector.org)

Robert T. Buchanan, MD
Highlands Plastic Surgeon
5.0 out of 5 stars 6 reviews

These answers are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.