If you're interested in skincare, you've heard at least once that Vitamin A (Retinol, Tretinoin) is good for skin. That's right! Actually, it is more than that. Vitamin A is the "skin vitamin" essential to all skin care regimens. It is the dominant vitamin of the skin because it has a fundamental role in the control of normal activities of skin cells. Vitamin A was enough when we're babies but as we grow we lose it. Therefore we should add it to our skin everyday and it helps