[object Object]
| Ingredient | Risk Level | Notes |
|---|---|---|
| Ammonia (Ammonium Hydroxide) | Avoid | Harsh alkaline agent; opens hair cuticle; causes scalp irritation, respiratory irritation, and strong odor |
| Hydrogen Peroxide (developer) | Caution | Oxidizing agent; can cause scalp burns at higher concentrations |
| m-Aminophenol | Caution | Dye coupler; potential skin sensitizer |
| p-Phenylenediamine (PPD) | Avoid | Strong sensitizer and contact allergen; classified as a possible human carcinogen; linked to bladder cancer in occupational studies |
| Resorcinol | Avoid | Endocrine disruptor; skin sensitizer; banned or restricted in some countries |