How do I fix these indents between my brows? (Photos)

Thank you for your question. It will most likely be in your best interest to have a combination of Botox and fillers. Typically those muscles are large from use over time. Botox can help to weaken the muscle and make it smaller. The filler will help to smooth the lines or "indents". Hope this helps, 

Botox is indicated for lines that are caused by muscle activity. Lines and contour irregularity at rest are best addressed with injectable fillers and skin resurfacing, with surgery, or a combination of all of these measures.