According to the provided reference, red onion is the best color onion for hair growth.
Red Onion and Hair Growth
The reference specifically highlights the benefits of red onion for promoting hair growth:
- Magical Hair Growth Properties: Red onion hair products or juice are described as working "magically" to boost hair growth rate.
- Sure-Shot Method: If you're looking for a reliable method to improve hair growth, products containing red onion are recommended as an ideal choice.
- Historical Use: Onions, in general, have a long history of use for promoting hair growth and addressing graying hair.
Therefore, based on the available information, red onion is the best color onion for hair growth.
