1 Test results based on the combined use of RYO Red shampoo, conditioner, and treatment. Tested on hair tresses by the Amorepacific Research Institute (N=21). 2 Root volume styling effect. Tested on hair tresses by Amorepacific Research Institute (N=21). 3 Cleansing efficacy test on simulated fine dust using white hair tresses. Conducted by P&K Skin Clinical Research Center (N=20). 4 Korea Standard Testing Institute / Test period: June 28 – July 13, 2023 Tested for issues such as dryness and roughness.
*Source: Nielsen, based on offline sales revenue of hair essence products in South Korea, January 2012 – December 2024. **Based on a human application test conducted by ELID Co., Ltd., July 2–5, 2019, on 22 women (average age: 40.5 years).