When their is deficiency of vitamins

 If your body has a vitamin deficiency, your hair often shows early warning signs. Here’s what can happen to your hair depending on the specific vitamin you're lacking:

🧠 Common Hair Changes from Vitamin Deficiency

1. Hair Loss / Thinning

Vitamin D deficiency: One of the most common causes of hair shedding (including conditions like telogen effluvium).

Iron deficiency: Low iron or ferritin (iron storage) can lead to diffuse thinning or bald spots.

Zinc deficiency: Can also cause hair loss and make existing hair brittle.

Biotin (Vitamin B7) deficiency: Rare, but can cause hair thinning or loss.

2. Dry, Brittle, or Dull Hair

Vitamin A deficiency: Needed for sebum production (natural scalp oil). Too little causes dry scalp and brittle hair.

Vitamin E deficiency: Affects blood circulation in the scalp, leading to weak and dull hair.

Omega-3 fatty acids (not a vitamin, but essential): Lack of these can cause dry and lifeless hair.

3. Slow Hair Growth

B Vitamins (especially B12): Important for red blood cells, which carry oxygen to hair follicles. Without enough, hair grows slower.

Protein deficiency (again, not a vitamin): Hair is mostly protein (keratin), so poor intake slows growth.

4. Scalp Issues (Flaky, Itchy, Inflamed)

Vitamin B2 (riboflavin), 

B3 (niacin), 

B6: Deficiency can cause seborrheic dermatitis—flaky, oily scalp.

Vitamin C deficiency: Needed for collagen production and iron absorption; its lack can cause weak hair roots and scalp bleeding.

---