Avoid washing by machine. Avoid sleeping with hair. Avoid making complex hair style with hair products. Or the hair will be tangled easily. Before wearing the hair or after putting the hair down, make sure the hair is smooth by combing the hair beginning from the bottom . If there is slightly tangled, do not comb forcedly. you can cut the tangled hair. If the hair is tangled seriously, you need wash the hair with shampoo. Comb the hair from the bottom gently in the water, untill all tangled hair is combed off. In general, all the tangled hair can be combed off in water. Immerse the washed hair in water with conditioner for 3 to 5 minutes. Let the hair dry naturally after washing. Avoid dry the hair with dryer. Avoid exposing the hair with sunshine directly. Avoid ironning the hair with high temperature(advise 100-120 degree).Avoid curlling the hair. The reason is that high temperature will hurt the hair. Avoid bleaching the hair. Bleaching will hurt the hair. Comb and detangle the hair before washing it. Add some shampoo. Wash the hair with brush or finger along the hair gently. If some hair gets tangled, comb the hair from the end part to top part slowly. Do not comb the hair with force. After washing with shampoo, put the hair into clean water and wash out the shampoo. Then apply conditioner to them. Comb gently through the hair extensions after the conditioner has been applied. Wash the conditioner out by cold water. Dry the hair with towel along the hair. Then let it dry naturally. If you need use drier, blow the hair from the top part to end part and avoid the hair getting tangled. You can straighten the hair with straighter. It will make the hair more straight and natural. Do not wash the hair with machine. The hair extensions can be washed by hand only. Only the light color hair can be dye to darker color. The dark color can not be dyed into light color. You can not make the color lighter by dying it. Remove the oily protective material applied on hair when manufacturing before you are ready to dye the hair. Prepare warm water with temperature 30-40 degree, wash the hair with detergent two or three times, then clean the hair with clean water. Rinse the hair dye out of the extensions using warm water. Once the hair dye is washed out, apply conditioner to them. Comb gently through the hair extensions after the conditioner has been applied. Wash the conditioner out using cold water. This will seal in the hair color and make the hair shiny. It is not recommended to dye the hair of color 613. The hair of color 613 is produced by bleaching instead of dying in the process of manufacture. The hair is easy to break when dying again. Try and dye one piece hair to make sure that the hair is not spoiled when dying before dye the rest.