We would need a good professional before and after photo with dynamic muscle movement to see how muscle influences the wrinkles in the area and also professional photo of when you are not making expressions of your glabella area. It seems there's some very fine line wrinkles there which can be...
You can use your regular skin care products after your filler and Botox treatment. The only caution is to use gentle cleansing and pressure. We recommend using medical grade skin care products like Transform MD and wearing sunscreen every day.
An exam is needed to give the best recommendation for you. While filler may be an option, it is temporary and if the area is too large it may not be financially worth it. Fat grafting is the most permanent solution.