Rainwater is good for washing your hair because it is a soft water that is neutral in pH, free from disinfection by-products, salts, minerals and other unnatural materials. Tap water, which is harder in comparison, does not wash hair as well because it makes lathering and rinsing more difficult.
Other benefits to using rainwater include that it’s free, it’s natural, and it makes hair softer, healthier and easier to manage. Rainwater rinse therapy helps repair damaged hair. This holistic approach to caring for hair is used all over the world to create silky, shinny locks without the expense of chemically infused hair products.