When it comes to skin, vitamin B9 is important for maintaining cellular health and preventing DNA damage, which can help prevent premature skin ageing. In addition, this vitamin is necessary for the production of blood cells and for cell renewal, which can improve the appearance of the skin and make it look healthier and more radiant. Vitamin B9 is also able to improve blood circulation and stimulate collagen production, which can help to even out skin tone and brighten the skin.