Vitamins for hair growth are designed to promote new hair growth and strengthen existing follicles after hair loss. They’re often marketed as magic pills that will give your hair volume and a healthy glow. But is that all advertising or do they actually work?

There is truth behind supplementing vitamin deficiencies and hair health. However, the research behind miracle hair growth supplements is lacking. So, depending on why your hair is thinning, hair growth vitamins may be worth the money. Here’s what to know before you buy.

Read more: Best Vitamins for Hair Growth

Do hair growth vitamins work?

The short answer is… it’s complicated. No clinical studies definitively back vitamin supplements that restore hair growth and prevent further loss. A vitamin supplement’s ability to help hair health comes down to what is causing the hair loss. If it’s because of medications you are on or medical conditions, vitamins for hair growth aren’t going to help. Some vitamin supplements for hair growth do help strengthen and restore hair shine, but typically only if your problem is a vitamin deficiency. They will not improve your hair growth if you do not have a vitamin deficiency.

Hair growth vitamins can also contribute to keeping hair healthy. But while they can help with appearance and strength, they won’t give you Rapunzel-like hair. Many of the nutrients in these supplements are related to hair growth (like biotin and vitamins A, C and E). That doesn’t mean that taking these vitamins will

Can Bryce Harper and the Philadelphia Phillies keep the magic alive? In a season in which the club fired its manager in June, finished third in the NL East, and was the sixth and final team in the National League to qualify for the playoffs, something magical might be happening this October in Philadelphia. With the swing of his life, Harper helped send the Phillies to the World Series where they will face the Houston Astros, champions of the American League for the fourth time in the last six years. The Astros finished the season with 106 wins — tops in the AL — and have yet to lose a postseason game after sweeping the Mariners and then the Yankees.

The World Series begins tonight in Houston. Aaron Nola will be on the hill for the Phillies against Justin Verlander for the Astros. First pitch is scheduled for 8:03 pm ET (5:03 pm PT) on Fox.

Here’s how you can watch every pitch of the World Series on live TV streaming services.

What’s the TV schedule for the World Series?

The Astros have home-field advantage and will host the first two games and, if necessary, the last two games of the World Series. The middle three games of the best-of-seven series will be in Philly. Every game will be shown on Fox.

• Games 1: Phillies at Astros on