"Which vitamin is good for hair growth" is a noun phrase that asks a question about the specific vitamin that is beneficial for promoting hair growth. For instance, biotin is a crucial vitamin for hair growth, contributing to healthy hair follicles and reducing hair loss.
This inquiry is significant because hair growth is an essential aspect of personal appearance, and many individuals seek solutions to improve the health and vitality of their hair. Biotin, in particular, has gained prominence in recent years due to its effectiveness in addressing hair growth concerns. The discovery of biotin's role in hair growth has revolutionized the understanding of hair care and led to the development of targeted treatments.