When it comes to how, precisely, the vitamin impacts pores and skin well being, we all know that vitamin D has anti-inflammatory and antioxidant properties that assist defend pores and skin cells.* Plus, vitamin D performs a vital position in thyroid well being because it helps regulate the manufacturing of thyroid hormones3.* These thyroid hormones play a key position in maintaining your hair, pores and skin, and nails youthful and powerful (along with influencing metabolism, temper, sleep, and so forth.).