What Happens If You Mix Toner With 40 Developer?
If you mix toner with 40 developer, the result will be a very strong and potent mixture that can lighten the hair color significantly. It can cause damage to the hair if left on for too long or used improperly and can lead to dryness and breakage. It is essential to follow the instructions carefully and use proper caution when mixing and applying hair products. It is recommended to use a lower volume developer with toner for more controlled and gentle results.