Derma Factory Niacinamide 20% Serum

The niacinamide serum stings when applied, but it is a pleasant tingling sensation. I feel like my pores are tightening and my skin feels firm, so it seems to be effective for skin elasticity. Perhaps because it contains rose water, it has a rose scent, and since the ingredients are natural, it is a suitable product for people with sensitive skin like mine. It is a bit of a shame that the quantity is small.

The portion is a bit small, but I am satisfied enough to repurchase it.