10/23/2026
🎓The science behind dog grooming
Medicated shampoos are formulated very differently from everyday grooming products, and one of the biggest differences is the type of surfactant they use.
Many therapeutic shampoos rely on strong surfactants like sodium lauryl sulfate because the medication inside the formula needs help reaching the skin in order to work.
Conditions such as bacterial infections, yeast overgrowth, follicular plugging, and heavy seborrhea often involve thick oils, waxy buildup, or biofilm that sits on top of the skin and prevents active ingredients from penetrating.
Strong surfactants are capable of breaking through that barrier so ingredients like chlorhexidine, benzoyl peroxide, miconazole, ketoconazole, or sulfur can actually reach their target.
Beyond cleansing, strong surfactants also improve how medicated shampoos spread. They create fast, dense foam that helps the active ingredient coat the entire dog evenly during the required contact time.
They’re chemically stable, predictable, and compatible with a wide range of therapeutic actives, which is important because medicated ingredients can be sensitive to pH, preservatives, and other components in the formula.
Strong surfactants even slightly increase permeability in the outer layer of the skin, which enhances the ability of certain medications to bind, pe*****te follicles, or interact with keratin.
Medicated shampoos are  built around delivering medication effectively, and that requires a surfactant strong enough to clear the path, spread the active evenly, and support the chemistry of the therapeutic ingredient. In medicated products, the surfactant isn’t just a cleanser,it’s part of the drug‑delivery system.