8 Best Vitamins and Supplements for Dry Skin. 1. Vitamin D. Vitamin D is a fat-soluble vitamin that’s critical for many aspects of health, including the health of your skin. Keratinocytes are skin 2. Collagen. Collagen is the most abundant protein in your body and accounts for 75% of your skin’s 4 days ago · Vitamin D deficiency occurs when your body doesn't get or process adequate amounts of vitamin D. Vitamin D helps your body absorb calcium, so a deficiency can lead to osteoporosis Vitamin deficiencies that can cause dry skin include vitamins D and A. Deficiencies in niacin, iron, or zinc can also cause dry skin. Learn More: Best At-Home Micronutrient Testing 11 Sources . Having vitamin or mineral deficiencies Having a skin condition like psoriasis or eczema Having certain medical conditions like HIV, cancer, and kidney disease Vitamins for Dry Skin There are several solutions for dry skin.

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