Excellent Applications of Sodium Cocoyl Isethionate CAS#61789-32-0

Sodium cocoyl isethionate is a fine white powder derived from coconut oil. It is a sodium salt known for being gentle on the skin. It is made by combining a natural sulfonic acid, hydroxyethyl sulfonic acid, with fatty acids found in coconut oil. This ingredient is most commonly listed on the labels of shampoos, shower gels, detergents, and bar soaps, as it functions as a surfactant.

Surfactants are used for cleansing because they can interact with both oil and water. Sodium cocoyl isethionate binds to oils to lift dirt from the skin and wash away buildup that accumulates throughout the day. Unlike harsher surfactants such as sulfates, which can strip natural oils and compromise the skin barrier, this ingredient is mild, helping reduce irritation while leaving the skin smooth and hydrated rather than tight or dry.

It also performs as an emulsifier, producing dense and creamy foam during cleansing. By lowering water’s surface tension, it enhances lather and helps remove grease and impurities from the skin. This foaming action is why products containing sodium cocoyl isethionate feel rich and luxurious when applied.

Skin Benefits of Sodium Cocoyl Isethionate

Sodium cocoyl isethionate is suitable for nearly all skin types, especially sensitive or dry skin. Its benefits include:

Produces soft, silky foam

By reducing water’s surface tension, it allows the product to spread easily on the skin and create a smooth lather.

Hydrates rather than dries

Its high foaming capability produces thick, stable foam without stripping moisture. Instead of drying the skin like other surfactants, it leaves skin feeling soft, comfortable, and replenished.

Effectively removes dirt, oil, and buildup

Because it binds water and oil, it efficiently lifts makeup residue and debris from the face, scalp, and body.

Helps protect the skin barrier

Compared with harsher cleansing agents, it gently cleanses without weakening the moisture barrier or causing dehydration.

Side Effects of Sodium Cocoyl Isethionate

At present, there are no widely reported side effects from using sodium cocoyl isethionate. However, individuals with coconut allergies should avoid it since the ingredient is derived from coconut oil. Excessive use may also cause dryness—especially for thicker or naturally dry hair types—because frequent washing can remove natural oils.

How to Use It

Because of its mild nature, sodium cocoyl isethionate can be used daily.

For shower gels or body cleansers: up to twice a day

For facial cleansers: up to twice daily

When selecting products, ensure that the sodium cocoyl isethionate ratio does not exceed 50%, as higher concentrations may cause dryness. Since it is commonly found in shampoos, body washes, soaps, and detergents, incorporating it into a daily routine is easy and provides noticeable cleansing benefits.