This Kenra Professional Clarify Deep Cleanse Shampoo is an excellent product to use at least twice a week. I enjoy trying different hair products, but they can sometimes cause buildup, which makes my hair oily and leaves my scalp feeling itchy. I have medium-length hair, and only a quarter-sized amount of this shampoo is enough to thoroughly cleanse it. It effectively removes impurities and product buildup, leaving my hair feeling squeaky clean without drying it out. I always follow with a moisturizing conditioner for best results. This shampoo also eliminates dulling deposits such as hard water minerals, metal ions, pollutants, silicones, and residue from strong-hold stylers. It adds noticeable shine and is safe for color-treated hair. Overall, it’s very effective, and a little goes a long way.