Calcium Gluconate - is considered as a revitalizing or restructuring agent  for the skin because of both calcium and gluconate. 

Calcium gluconate is not only good for restoring the skin /scalp but the gluconates have moisture attracting properties that make hair feel softer, more elastic and less brittle. They also protect hair from dry weather and wind, which in turn reduces hair shedding and enhances hair growth.

Other benefits: Maybe used to treat conditions caused by low calcium levels such as bone loss (osteoporosis), weak bones (osteomalacia /rickets), decreased activity of the parathyroid gland (hypoparathyroidism), and a certain muscle disease (latent tetany).