Hair dye can last 4-12 weeks, depending on the type of dye and the individual’s hair characteristics such as texture and porosity. However, regular washing and exposure to the sun can cause it to fade faster.
A sulfate-free shampoo is recommended to extend the life of hair dye. Sulfates can strip the hair of its natural oils, causing the dye to fade faster. Some popular options are:
- Fanola No Yellow Shampoo
- OGX Sulfate-Free Moisture Repair + Shea Butter Shampoo
- Paul Mitchell Color Care Shampoo
- Joico Color Balance Purple Shampoo
- L’Oreal EverPure Repair and Defend Shampoo.