BioStacksWhy Zinc for Hair
For hair support, Zinc is a important ingredient backed by research. Involved in over 300 enzymes and critical for immune function, wound healing, protein synthesis, and DNA repair. Zinc picolinate and zinc bisglycinate are the best-absorbed supplemental forms, while zinc oxide has poor bioavailability.
How much zinc do you need
Research points to 15–30 mg as the effective range for zinc. Common supplement dose; UL is 40 mg/day. Lower doses may provide some benefit, but most studies showing clear results used this range.
Which form absorbs best
Avoid zinc oxide — poorly absorbed. Avoid zinc sulfate — lower absorption, may cause nausea. The most bioavailable options are zinc picolinate or zinc bisglycinate.
The evidence behind zinc
Research supporting zinc for hair is rated as strong. Meta-analyses of 30+ trials confirm immune benefits; reduces common cold duration by ~33% Learn more
NOW
Zinc Glycinate
zinc bisglycinate · 30 mg
NOW
Zinc Picolinate 50 mg
zinc picolinate · 50 mg
California Gold Nutrition
Zinc Picolinate 50 mg
zinc picolinate · 50 mg
Solgar
Zinc Picolinate 22 mg
zinc picolinate · 22 mg
Swanson
Zinc Picolinate 22 mg
zinc picolinate · 22 mg
MegaFood
Skin, Nails & Hair 2
zinc bisglycinate · 15 mg
MegaFood
Skin, Nails & Hair 2, 90 Tablets
zinc bisglycinate · 15 mg
Thorne
Zinc Picolinate 15 mg
zinc picolinate · 15 mg
Life Extension
Zinc Caps 50 mg
Mixed forms · 50 mg
NOW Foods
Zinc, 50 mg, 250 Tablets
zinc gluconate · 50 mg