Recommendation: Perform a preliminary patch test according to the following directions prior to each application, even if the client has had color treatments before. Using a cotton-tipped applicator, apply the color mixture to a 1" x 1" patch of clean skin (gently wash with mild soap and water) on the inside of the forearm and leave to process. After 45 minutes, cleanse the area thoroughly with lukewarm water. After 48 hours have passed, examine the test area. If no reaction has occurred during the test or within 48 hours following the patch text, then the shade may be applied to the client. Do not treat the hair if any reaction occurs. This is a precautionary test, and does not mean conclusively that sensitivity or allergies will not occur during treatment. To use: The mixing ratio is always 2 parts Colorance Acid Color Lotion and 1 part Colorance Acid Color (i.e. 40ml Lotion + 20 ml color). Mix lotion and color thoroughly in an applicator bottle. Apply to shampooed, towel-dried hair, evenly saturating all hair. Leave to process for 5-25 minutes based on the desired color intensity. Thoroughly rinse hair with warm water. Do not shampoo. Style as desired.