How long does the color from this henna last, and how do I maintain it? — Iranian natural henna, 25 g

The color from pure henna is considered semi-permanent. It doesn't wash out completely in a few shampoos because it forms a physical bond to the hair shaft. However, the coating does gradually fade and thin over time due to washing, sun exposure, and styling. Typically, you'll notice the warm, vibrant tone softening after about 4-6 weeks, though a subtle tint often remains much longer.

To maintain the color and the glossy, fuller look it provides, you can do regular root touch-ups or full applications every 4-8 weeks depending on your preference. Between applications, use color-safe, sulfate-free shampoos and cooler water when washing to slow fading. Minimize exposure to chlorinated pools and direct, strong sunlight, or wear a hat. Because henna can build up with repeated use, subsequent applications may result in a slightly darker, richer tone than the first one. Store any leftover dry powder in its sealed bag, inside an airtight container in a cool, dark place to preserve its potency.