Reported by Liputan6, the trend #nopoo #noshampoo is widely practiced by teenage boys and adults. The owner of the TikTok account @kainoalam also revealed that his hair became healthier after not shampooing for 7 months. In fact, his hair became more fragrant. "After I stopped shampooing, my hair became very wavy, thicker, more textured, and started to smell better," he said.

In another source, Islam reveals that her hair no longer falls out and becomes thicker. However, she only rinses her hair every two days and uses apple cider vinegar on her scalp every week. She also reveals that this trend is sometimes done to replace shampoo with products that are considered safer.

Although many people have healthy hair after following the anti-shampoo trend, there are still many who have stopped doing it. Some people also experience hair loss, dandruff, dryness, and even almost baldness after not using shampoo for 1 year.

"Sweat, oil, and residual dirt on the scalp can clog hair follicles, thus inhibiting hair growth. While Tewari believes that washing hair with just water can make the hair accustomed to producing the right amount of natural oil, this has not been scientifically proven. 'The scalp and hair collect dirt, oil, and sweat. To effectively remove them, you need a surfactant as a cleanser. Water alone will not remove the dirt and oil,' says Tewari. Are Dream friends interested in trying the anti-shampoo trend?"