Question: what are good vitamins for hair and nails?
Answer: Biotin. Biotin (also known as B7) strengthens hair and increases its density. ... 
Fish Oil. Fish oil makes hair and nails shiny, and works well as an antiaging supplement. ... 
Vitamin A. Vitamin A reduces acne flares and is an antiaging agent. ... 
Vitamin B. ... 
Vitamin C. ... 
References.