* Exposure to air: Bleach is a chemical that reacts with oxygen in the air. This reaction weakens the bleach and reduces its effectiveness.
* Moisture: Bleach can absorb moisture from the air, which can dilute it and make it less potent.
* Temperature: Extreme temperatures, both hot and cold, can also affect the stability of bleach.
Signs of spoiled bleach:
* Changes in color: Bleach should be a clear, slightly yellowish liquid. If it becomes cloudy, discolored, or has a brownish tint, it's likely spoiled.
* Strong odor: Spoiled bleach may have a weaker or even a different odor than fresh bleach.
* Reduced effectiveness: You may notice that the bleach takes longer to lighten your hair or doesn't lighten it at all.
How to store hair bleach:
* Store in an airtight container: This prevents exposure to air and moisture.
* Store in a cool, dry place: Avoid direct sunlight and extreme temperatures.
* Use within the recommended time frame: Check the manufacturer's instructions on the product for the shelf life.
Never use bleach that has gone bad. It can be ineffective and potentially harmful to your hair and scalp.