Some people say their Botox treatments no longer last as long as they used to. Dermatologists say the injectable does not typically stop working, and that several factors can explain why its effects may fade sooner than expected.
Botox is supplied as a freeze-dried powder and mixed with sterile saline before use. Injectors may use different dilution volumes, so concentration alone does not determine how long results last. Dermatologist Hadley King says the number of units administered is more important: the same number of units remains the same regardless of the volume in which it is delivered.
A lower dose is one common reason for shorter-lasting results. Some patients request a softer, more natural appearance, sometimes called “baby Botox,” which uses fewer units. Brian J. Abittan, a dermatologist at Mount Sinai, says that patients seeking more facial movement may also receive lighter doses, which can wear off sooner.
Individual factors matter, too. King says people with stronger facial muscles, including some men, athletes and people with expressive faces, may find that the effects fade sooner. Responses vary even among patients receiving the same dose: some see results for three to four months, while others experience two to three months. Injections that do not precisely target the muscle can also shorten the effect.
King says treatment should be provided by a qualified professional, such as a board-certified dermatologist or plastic surgeon. Counterfeit products and improper injection techniques are uncommon in reputable medical practices, but choosing a licensed provider is important. Frequent intense exercise, high muscle activity and a fast metabolism may also affect how long results seem to last, though evidence for these effects is mixed and any impact is generally modest.
Most patients do not become tolerant to Botox, King says. Some people who have received treatment consistently may maintain results with a similar or slightly lower dose over time. A small subset develop neutralizing antibodies that make treatment less effective; this is more often associated with high doses for neurological conditions, frequent touch-ups or injections less than 12 weeks apart. True resistance is uncommon.
Other cosmetic procedures address different concerns rather than replacing Botox. Lasers may help with skin tightening, pigmentation, texture and lines at rest, while Botox targets wrinkles caused by facial movement. King describes these options as complementary and says treatment plans can be tailored to individual concerns.
For people unhappy with how long Botox lasts, King lists Dysport, Xeomin, Jeuveau, Daxxify and Letybo as alternatives that may offer similar, longer-lasting results. Any injectable treatment should be discussed with a licensed professional.
Sources: Vogue.