Rainy Season Hair Care Shampoo

I am currently using Ryeo Heukwoon Root Strengthening & Volume Shampoo during the rainy season. When my hair tends to droop in the damp weather, using this shampoo seems to help revive root volume. The product advertisement claims 24-hour volume, but I don't think it quite reaches that level. The scent is closer to herbal than floral. It is mildly acidic, so it is gentle, and the lather is bouncy, providing good cleansing power. Even just using the shampoo, my hair feels soft without becoming stiff.