When does Azzalure or Botox start to soften?

Thank you for your question. Usually the shelf life is about 2 months, but some report results for up to four months. 

Yes, results will last 3-4 months, but it will gradually soften within a few weeks after treatment. If you're unhappy with your final results, venus legacy can soften results. Best, Dr. Emer

You are correct that Botox typically lasts 3-4 months.  The product does begin to wear off gradually.  You can expect some softening in 6-8 weeks.  Discuss your treatment results with your injector so that further treatments can be adjusted.  Lower doses of the product can be used so that the result is not as severe.  Always see an expert injector.

Although Botox will last a few months the results go away gradually so there is some softening that will be evident as early as 3 weeks

Thank you for your question. Botox or Azzalure results last on average 3 to 4 months. You may start having movement back as early as 6 to 8 weeks. A lower dosage can be done next time, if you prefer a more natural look. All the best, Dr.Michon

Both products, Botox and Azzalure last about the same amount of time being on the average 3 to 4 months or even longer in some individuals. Softening effect of the product will start coming in at approximately 2 months or longer. If you don't like the Frozen look you should specify this request to your treating physician or find someone else. Good luck from New York City

Botox results last 3-4 months on average. You may start noting some reduction in effect as soon as 6-8 weeks after treatment. 

Hi sianyf,
It's really variable but those with faster metabolism tend to have movement sooner. Though there is a standard dilution for Botox, some Providers prefer a more diluted preparation. This will, of course, wear out faster. 
Hopefully, you'll get a bit of movement by 6-8 weeks.
All the best, 
Justin Harper, M.D.