Once a week after Purple Shampoo, apply on damp hair and leave on for 5 minutes. Rinse well. 

This product contains ingredients which may cause skin irritation on certain individuals and a preliminary test according to accompanying directions should first be made. This product must not be used for dyeing the eyelashes or eyebrows; to do so may cause blindness. Avoid contact with eyes and skin (other than areas of application). If contact occurs, rinse thoroughly with water. Keep out of reach of children. Do not ingest. Wash hands thoroughly after use. Do not use on sensitive or irritated scalps. Perform the following skin allergy test 48 hours before each use of the product as allergies can develop suddenly, even if you have previously used a haircolor product from this brand or another. 

Skin Allergy Test: With soap and water, wash an area the size of a quater in the bend of your elbow. Pat dry with absorbent cotton. Apply product to test area, using an absorbent cotton-tipped applicator. Let test spot dry. Do not wash, cover or disturb for 48 hours. Examine test area periodically over the next 48 hours. If you experience any reactions - such as redness, burning, itching, swelling, skin abrasions, eruptions or irritation in or around the test area. Do not use this product or any haircolor until after consulting doctor.