【New, Unopened】 Arimino Qualine Acid 1 Agent pH4 A straightening perm solution (agent 1) that works in an acidic range to minimize hair damage while effectively straightening stubborn curls. It leaves damaged, aging, or bleached hair with a soft, natural straight finish. • Contents: 1000g • Condition: New, Unopened • Type: pH4 (Red) • Ideal for acidic straightening and straightening treatments • Gentle on hair concerned about damage and fine hair • Natural finish and soft texture • Recommended for those who already have pH6 ※ This is a professional product, so please purchase if you have a cosmetology license or intend to use it in a salon.