We communicate with facial expressions that reflect our feelings and emotions. Facial expressions are the result of muscle contractions. Over time, with repeated facial expressions these contractions create visible lines and grooves which make us look older and can be even misconstrued as fatigue, anger, anxiety, sadness and fear. The grooves and wrinkles caused by the muscles of facial expression are called dynamic wrinkles. 

What are neurotoxins and how do they work? 

Neurotoxins are wrinkle relaxers for nonsurgical facial rejuvenation. Neurotoxins are injectables containing the neuromodulating substance botulinum toxin A. They are used aesthetically to reduce muscle activity that causes dynamic wrinkles at the brow, crow’s feet, bunny lines, lines around the mouth, dimpled chin, mouth frowns, platysmal bands and horizonal neck lines.  

Injection of neurotoxins temporarily relaxes the muscles of facial expression and smooths dynamic wrinkles. When injected by an expert, they will not eliminate facial expressions. However, neurotoxin injections can treat and prevent unintentional habits such as facial grimacing. When received on a regular schedule, injections can even prevent formation of new dynamic wrinkles and reduce the severity of existing dynamic wrinkles. 

Injections of neurotoxins do not stop the aging process but can help to slow the visible signs of aging caused by muscle contractions. Treatment is quick and easy with no downtime and in the right hands can produce superior results. Nonsurgical facial rejuvenation can improve your quality of life and satisfaction with your appearance with great safety profile. However, results are technique dependent.  

What happens during this procedure? 

When treating fine lines and wrinkles, the dermatologist injects a small amount of botulinum toxin into targeted muscles on the face or neck. This temporarily relaxes the targeted muscles, causing fine lines and wrinkles to diminish. The effect lasts about 3 to 4 months and sometimes longer. 

Will I lack facial expressions after treatment?  

Dermatologists want their patients to look natural. To do this, they inject just enough to weaken and relax the targeted muscles without affecting other muscles. This allows patients to maintain their natural facial expressions. 

Will I lose my sense of feeling where I have the injections?  

No. This treatment does not affect your ability to feel.  

When is it safe to have another treatment?  

You can have another treatment when the excessive sweating or lines and wrinkles return. With repeat treatment for lines and wrinkles, the muscle may thin, leading to longer-lasting results. 

Is there downtime? 

Most people return to the everyday activities immediately. As soon as you leave the treatment room, you can apply makeup. 

What must I do after the procedure? 

To prevent the injected substance from spreading to areas where you do not want it, you’ll need to take a few precautions: 

Vital information to tell your dermatologist 

If you decide to have botulinum toxin therapy, be sure to give your dermatologist the following information: 

Brands of Neurotoxins 

There are four FDA approved neurotoxins:  

What are the neurotoxin applications? 

The most common application is to treat deep forehead creases, brow lines, furrows, vertical glabellar lines also known as the ‘angry 11s” and crow’s feet. Expanded use based on experience and efficacy include: 

 
The key to success with neurotoxins is injector expertise. Dr Hashemi is a board-certified dermatologist in Sacramento California. She is a Castle Connolly Top Doctor and specializes in skin cancer, cosmetic and laser surgery. Dr. Hashemi is also an expert aesthetic injector of dermal fillers and neurotoxins. Contact us at The University Skin Institute to schedule a consultation with her and learn about all cosmetic services she offers.