1 Clean your brush and use clean water or a second color to paint inside the outline, being sure to blend with the outer color. 2  Leave the middle white. 3  For a dark center, paint it in once the flower has dried.  For a light center, paint it while the flower is still wet to blend.
Vitamin A is a group of unsaturated nutritional organic compounds that includes retinol, retinal, retinoic acid, and several provitamin A carotenoids (most notably beta-carotene). Vitamin A has multiple functions: it is important for growth and development, for the maintenance of the immune system and good vision.
Function of Vitamin A. The cells in our eyes that perceive light and color require vitamin A to function properly. In fact, one of the first signs of vitamin A deficiency is poor night vision, and if left untreated, vitamin A deficiency can lead to blindness.Vitamin A supports skin cells and the development of healthy bone tissue.itamin A & Beta-carotene. In addition to vitamin A, there are dozens of other nutrients--called carotenoids--that are converted into vitamin A in the body and therefore have vitamin A activity.. The best known of these carotenoids is beta-carotene.