Hello!! Does anyone know if Retinol and Numbuzin no 1 B5 Serum can be used together? 
I’m currently using a retinol product in my night time routine. Does anyone know if we can combine these 2 products together?  As I do know that retinol can combined with pathenol or Niacinamide. But I'm not really sure about this as it has a lot other ingredients.

Numbuzin B5 Serum with retinol

It leaves white cast. And it has a little bit of the "sunscreen" smell. 

Really love how lightweight and moisturizing it is. It kind of has a creamy texture, but it smooth out and easy to apply. I have combination of senstive and oily skin. So I'm always worry that sunscreen will make my face double the oiliness throughout the day. But this sunscreen it doesn't. 

wintersnow