I had 20 units of Botox but it didn't work. How much more do I need? I'm thinking 30-40.

It's difficult to determine without pictures. However, for forehead wrinkles a combination approach is best. Forehead wrinkles need a combination of fillers, botox, lasers and microneedling/PRP for improvement. Best, Dr. Emer.

Thank you for sharing your question. Unfortunately without an in-person examination it is difficult to offer definite advice but you should have seen some improvement in your wrinkle appearance with 20 units of Botox and I would voice your concerns with your injector.  You may require additional units but ensure that your injector has the experience to appropriately treat your forehead areas of concern.