syndetbased

Syndet-based refers to cleansers whose primary cleansing agents are synthetic detergents, rather than traditional soap made from saponified fats. The term is used in cosmetics and personal care to describe products that rely on synthetic surfactants to remove dirt, oils, and impurities. Unlike soap, which is typically alkaline and can strip lipids, syndet-based formulations aim to be milder and more skin-friendly, with a pH closer to the skin. The concept is common in shampoos, facial cleansers, body washes, and cleansing bars (syndet bars).

Common surfactants used in syndet-based products include sodium cocoyl isethionate, sodium lauroyl sarcosinate, and disodium cocoamphodiacetate or disodium laureth sulfosuccinate; many formulations also incorporate nonionic or amphoteric surfactants such as cocamidopropyl betaine or decyl glucoside to lower irritation. The goal is to achieve effective cleansing with reduced foaming and gentler interaction with the skin’s outer barrier. pH is often adjusted to mildly acidic values around 5.0 to 6.0, closer to skin’s natural pH than traditional soap.

Advantages of syndet-based cleansers include lower risk of drying and irritation, improved compatibility with sensitive or reactive skin, and compatibility with color-treated hair in shampoos. They can be gentler on the scalp and skin when formulated properly. Limitations include higher cost, potential for residue if rinsing is incomplete, and varying irritation potential depending on the surfactant blend and additives. Some products marketed as syndet-based still contain stronger surfactants and may not suit extremely sensitive users.

Industry usage has grown as consumer demand for gentle cleansing options increases. Dermatologists may recommend syndet-based cleansers for dry or irritated skin, eczema-prone individuals, or for daily facial cleansing. They are also common in fragrance-free or hypoallergenic lines due to milder surfactants and additive choices.