Wow, this is fun! An actual doc (i suppose he/she is a real doc) answering all your queries.
I do have a question for you, doctor.
What's niacinamide? I read that at Olay Total Effect's label at the back? Is it good for the skin ie. on anti-aging, pimples, etc.? I don't read it much on the other prods. I mostly read retinol or vitamin e. and the like. Thank you!