What effect does a clarifying shampoo have on the hair?

A clarifying shampoo is specifically formulated to remove product buildup on the hair and scalp. Over time, regular use of styling products like gels, sprays, and heavy conditioners can leave residues that dull the hair's appearance and weigh it down. Clarifying shampoos contain stronger detergents compared to regular shampoos, enabling them to deeply cleanse the hair and eliminate these residues effectively.

While deep conditioning, adding color, and strengthening hair follicles are important functions for various hair care products, they are not the primary purpose of a clarifying shampoo. Deep conditioning focuses on hydrating and nourishing hair strands, color products aim to enhance or change the color of the hair, and treatments for strengthening hair follicles concentrate on promoting healthier hair growth, none of which directly relate to the key function of a clarifying shampoo. Thus, the correct answer highlights the unique role that such shampoos play in maintaining clean and vibrant hair.