Shelf life of eye black

The shelf life of eye black products can vary depending on the specific type and formulation. Here are some general guidelines:

Unopened eye black products:

Liquid eyeliner: Typically has a shelf life of about 12 to 24 months. High-quality liquid eyeliners with advanced preservative systems may have a longer unopened shelf life of up to 24 months.Pencil eyeliner: Can usually last 2 to 3 years when unopened. Pencil eyeliners are generally more stable compared to liquid ones, and as long as they are stored properly in a cool, dry place, they can maintain their quality for a relatively long time.Kohl eyeliner: Similar to pencil eyeliner, kohl eyeliner usually has an unopened shelf life of 2 to 3 years. However, some kohl products with natural or organic ingredients may have a slightly shorter shelf life, around 18 to 24 months, as these ingredients may be more prone to degradation.

Opened eye black products:

Liquid eyeliner: After opening, it is recommended to use liquid eyeliner within 3 to 6 months. The frequent contact with air and the application process can introduce bacteria and other contaminants, which can cause the product to deteriorate faster.Pencil eyeliner: For opened pencil eyeliners, the shelf life is usually about 6 to 12 months. Although they are more resistant to contamination than liquid eyeliners, the repeated sharpening and exposure to air can still affect their quality over time.Kohl eyeliner: Once opened, kohl eyeliner should generally be used within 6 to 12 months. It's important to note that kohl products often have a softer texture, which may make them more susceptible to drying out or becoming contaminated after opening.

It's important to check the product packaging for specific expiration dates and storage instructions. Additionally, if you notice any changes in the color, texture, smell, or performance of the eye black product, it's best to discard it, even if it hasn't reached the stated expiration date.