April 25, 2024

How Many Units of Botox for Your Forehead?

Learn about Botox injections for forehead wrinkles, how to get lasting results and more. Compare upfront prices and book top Botox providers with Certainly.

Reviewed by: Karmay Hung, DNP, AGACNP-BC, CEN
Table of Contents

The forehead is a common treatment area for Botox. Using Botox in the forehead can address cosmetic concerns like wrinkles and fine lines with a quick, minimally invasive treatment. But if you’re considering forehead Botox, you may be wondering how much Botox is necessary for treatment. The answer is – it depends. With that being said, there are some general guidelines for the number of units and price of forehead Botox. We’ll cover that information in this blog and also give you some tips for prolonging your Botox results. Read on to learn more!

Understanding Botox Injections for Forehead Wrinkles & Fine Lines

First, let’s talk about how Botox injections for the forehead work. Forehead lines and glabellar lines (the lines between your eyebrows) form due to the facial movements and contractions that happen during normal daily life. Expressions like raising your eyebrows, frowning, etc. will cause these wrinkles to naturally form over time. They also become more pronounced as we age and skin loses some of its elasticity.

Botox uses a tiny amount of neurotoxin to temporarily freeze or paralyze the muscles that contract and contribute to wrinkles. Relaxing these muscles can help reduce the appearance of fine lines, wrinkles and other signs of aging. 

Forehead Botox is a popular cosmetic treatment because it’s minimally invasive, convenient and results can last for months. Often, forehead Botox appointments take less than 30 minutes and you can get back to your usual activities almost immediately. But, follow-up appointments throughout the year are needed if you want to maintain results over time.

How Much Does It Cost?

The cost of Botox can vary widely based on factors like location, treatment area, number of units required for treatment, the severity of the lines or wrinkles and the experience of the provider.

Forehead lines and glabellar lines are two of the three FDA-approved areas for cosmetic treatment, and the labeled dosage in Botox’s prescribing information is 20 units for both areas. However, this may vary from individual to individual. Some providers may also charge by treatment area, rather than the number of units.

But, based on this information, we can still get a range for how much forehead Botox treatment will cost. The average cost of Botox units in the U.S. is around $10 to $15 per unit. In areas like NYC, the average cost can be a little higher and fall in the $9 to $24 per unit range. However, some providers charge a fixed cost per area rather than per unit, with prices going up to $750 for one area.

So in NYC, if your provider recommends 20 units for forehead lines, your session could cost anywhere between $180 to $750. Many providers also require you to pay for a minimum number of units, so you may need to pay for 20 units even if they don’t end up using all 20 units.

In short, Botox is not a one-size-fits-all solution. Talking to experienced injectors can help determine your individual needs. However, it can be tricky to navigate providers’ different pricing schemes to figure out your individual cost. Certainly simplifies these complexities to make it easy for you to compare the cost of Botox.

Possible Side Effects

Botox is considered a safe and effective cosmetic treatment and has been FDA-approved for cosmetic purposes. But there is a potential for side effects. Most side effects are mild and dissipate within a few days on their own. Some side effects you may experience after Botox treatment include: 

  • Injection site reactions like pain, swelling, bruising or redness
  • Flu-like symptoms
  • Headache
  • Watery or dry eyes
  • Droopy eyelids or eyebrows

If mild symptoms become severe or don’t subside, don’t hesitate to contact your provider for further guidance. In rare cases, Botox can cause more severe side effects. Seek medical attention if you experience side effects like muscle weakness, vision problems, incontinence, heart problems or signs of an allergic reaction.

How long will Botox last in the forehead?

Forehead Botox, like all Botox treatments, is temporary. The effects of Botox wear off over time, which is why people return for periodic treatments to maintain results. The longevity of Botox treatments will vary from person to person, but you can generally expect forehead Botox treatments to last for around three to four months. Some people may see the effects subside in as little as two months and may see the effects last as long as six months.

Factors that affect the longevity of your Botox injections

There are a few different factors that affect the longevity of Botox injections. These factors include:

  • Treatment area - The area being treated can affect the duration of Botox injections. Certain areas have more muscle contractions than others, so the effects of Botox may not last as long. For instance, lip flips may not always last three to four months due to the fact we use our mouth muscles for speaking, talking, smiling, frowning and numerous other activities every day.
  • Condition of skin - If you have more severe or deep wrinkles and lines, Botox may not last as long as it would for someone who has less prominent signs of aging.
  • Age - Younger skin produces more elastin and collagen, which keeps skin plump and youthful. Younger patients may see their results last longer than older patients.
  • Metabolic rate - Your metabolic rate may affect how quickly your body processes Botox.
  • Lifestyle and environmental factors - Various environmental and lifestyle factors can affect the duration of Botox results. Sun exposure, pollution, hydration levels, tobacco use, skin care routine and various other factors can all play a role.

Tips to get lasting results

While there are no guarantees for how long your Botox treatment will last, you can help optimize results by implementing certain practices in your daily routine. Here are some tips you can follow for lasting Botox results:

  • Follow your post-care instructions - After Botox treatment, your injector will provide you with detailed post-care instructions. These instructions will likely include things like avoiding exercise for 24 hours after treatment, not rubbing or touching your face, avoiding lying down for four hours after treatment and other instructions that will promote healing and optimize your results. You typically need to follow these instructions for a few days after treatment.
  • Wear sunscreen - Sunscreen is always helpful for protecting your face from harmful rays, but it can also help prolong your Botox results. Wear at least 30 SPF full-spectrum UVA/UVB sunscreen to protect your skin and lessen the effects of climate on your Botox treatment.
  • Follow a skin care routine - A consistent skin care routine can help support skin health and keep skin moisturized.
  • Hydration - Make sure to keep well-hydrated. Drinking enough water is important for a myriad of reasons, but it can also help promote skin health and help skin stay plump and clear. 
  • Avoid smoking - Tobacco use can break down collagen and elastin, so avoid smoking if you want to prolong Botox results.
  • Follow a regular Botox schedule - If you want to maintain your results over time, it’s good to have a Botox schedule with periodic treatments throughout the year. Talk to your provider about what schedule is best for your needs.

Compare Botox providers in NYC 

If you want to find a forehead Botox provider in New York City, you may find the number of options overwhelming. With the vast array of providers out there, it can be difficult to compare them and narrow down your choice. Fortunately, Certainly is here to make things easier.

The Certainly platform allows you to search for Botox providers in NYC by location. Enter your area and your desired Botox treatment to find providers nearby. You’ll then have a list of providers to choose from, and you can book your appointment directly online once you find the right one for you.

Get Upfront Costs with Certainly Health 

Finding a provider is difficult enough, but comparing Botox prices can be even more of a struggle. Transparent pricing for cosmetic services isn’t always readily available but Certainly can help with that, too. Certainly allows you to compare estimated costs for Botox treatments across providers in New York City. This way, you don’t have to deal with surprise bills after your treatment. Ready to give Certainly a try? Search for Botox providers on our platform today!


  1. https://www.accessdata.fda.gov/drugsatfda_docs/label/2018/103000s5306lbl.pdf
  2. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7874868/
  3. https://www.plasticsurgery.org/news/blog/how-long-does-botox-last#:~:text=In%20general%2C%20Botox%20lasts%203,longer%20after%20the%20second%20treatment
  4. https://pubmed.ncbi.nlm.nih.gov/37410613/