In addition to surfactants as the primary active agents, adsorbent powders (such as corn starch, rice starch, or silica) in dry shampoo formulations also play a crucial role. These porous powders possess a large specific surface area, enabling them to physically absorb oils and moisture like a sponge. Combined with the chemical adsorption of surfactants, they provide a dual mechanism to quickly eliminate greasiness from the hair.

Propellant (e.g., LPG) in aerosol dry shampoo is responsible for delivering the contents in a uniform and fine spray, ensuring that active ingredients can fully cover the hair roots and scalp area. Meanwhile, conditioning ingredients (such as silicone oil or plant extracts) work to smooth the hair cuticles, reduce static electricity, and enhance the smoothness of the hair strands while removing oil. This helps prevent dryness and frizz after cleansing, improving the overall user experience.

From "Formula—Mechanism of Action—Experience," from a user's perspective, this is a classic collaborative process: surfactants and adsorbent powders are responsible for precisely capturing and locking in oil and dirt (mechanism of action), propellants ensure effective delivery (formulation design), and conditioning ingredients focus on repairing and enhancing texture (final experience). Users simply need to spray and gently massage, and within minutes, their hair regains its refreshing, voluminous bounce—all thanks to the seamless collaboration of each component, working together in perfect harmony.