1) Apply a generous amount of Bigen Semi-Permanent Hair Color directly from the bottle to shampooed, towel-dried hair. For best results, use entire bottle to ensure hair is saturated. Process 25 minutes at room temperature. Freshly relaxed hair may require less time. For longer-lasting results, place plastic cap over hair and process under a warm dryer for 10 minutes, then allow to cool for 5 minutes. Heat is not recommended for freshly relaxed hair. Rinse hair thoroughly, and style as usual.
2) Timing: Wait 25 minutes at room temperature. Check color development several times by wiping a strand of your hair with a cotton ball or paper tissue to adjust your developing time. Once desired color is obtained, proceed to rinse your hair.
3)Rinse: Rinse hair thoroughly with warm water until water runs clear
4) Shampoo and Condition: Use a mild acid shampoo and conditioner* to bring hair back to a natural weak-acid state. Conditioner for color-treated or damaged hair is recommended.IMPORTANT: Hair color products can cause an allergic reaction, which in certain rare cases may be severe. If you have ever experienced any allergic reaction following use of a coloring product, do not use this product.CONDUCT A SKIN ALLERGY TEST 48 HOURS BEFORE EACH USE OF THIS PRODUCT BY APPLYING A SMALL AMOUNT TO INSIDE OF ELBOW. IF DURING 48 HOURS YOU DO NOT NOTICE ANY SIGNS OF BURNING, SWELLING, REDNESS OR IRRITATION, YOU CAN USE THIS PRODUCT.