Both my daughter and myself having been using this serum for some time now. She has oily skin with a tiny bit of acne, I have normal but pigmented skin and this serum works for both of us!
She uses it in her nightly routine whereas I use it in my morning routine, which shows how versatile this product is.
We both use it daily, the Niamacide is in a nice formulation with good natural ingredients which is the attraction for us. I do use additional products together with this for my hyperpigmentation which is slowly improving, but dramatically improved in a 2 year period, great product!