Recently I wrote a review about the new powerful set of 4 different Alpha-H vitamin Serums. In this set are the vitamins A, B, C and E, of which the vitamin B is a new serum.   Alpha-H Vitamin B Serum. The vitamin B serum of Alpha-H includes the two most important B vitamins for the skin, namely B3 (niacinamide) and B5 (panthenol). In addition, it contains even more active ingredients. 5% vitamin B3 (niacinamide): An essential vitamin for sensitive skin. It stimulates the production of collagen and free fatty acids, making the skin firmer and losing less moisture. This makes your skin ...