If you have dark hair and want a light brown hair color, you must first lighten it. This is achievable for everyone with virgin medium or dark brown hair. If you've already coloured your hair or if it's black, you'll need to pre-lighten it using bleach. Severe sunburn or sun poisoning can result in symptoms such as skin redness, blistering pain, and tingling. Swelling. These may be signs of melanoma, which is a cancer that develops from pigment cells (melanocytes). It can appear on the skin or inside the body and is the most serious type of skin cancer. The only way to prevent melanoma is by avoiding exposure to sunlight. The deeper the color, the longer it will take to lighten. For example, dark brown can't be lightened quickly - it takes more than one treatment session to reach there. On the other hand, light brown can be lightened with one treatment session. However, it's not recommended since it doesn't last very long. You can also add shades to darker colors or lighten shades to darker colors. For example, you can lighten your blonde hair easily by coloring it lighter than its original color. However, this won't work for colors like red or purple since they are derived from melanin, not chlorophyll. There are two ways to lighten your hair color: 1 Bleach it before coloring it. 2 Color part of your hair white then blend in the colored hair. Both methods work well for lightening dark hair colors.