San Shield

San Shield Encyclopedia

Stearic Acid

Stearic acid is a fatty acid that can be extracted from plant or animal fats. In skincare products, stearic acid is commonly used as a thickening agent, emulsifier, and moisturizer, which is also present in San Shield.

As a moisturizer, stearic acid helps to retain moisture in the skin and forms a thin film to prevent water evaporation, thus keeping the skin soft and hydrated. It can attract moisture and lock it onto the skin surface, providing long-lasting moisturizing effects.

Additionally, the stearic acid in San Shield also functions as an emulsifier, meaning it can mix oil-based and water-based ingredients together, forming a stable emulsion. This is crucial in the formulation of San Shield as it allows for even dispersion of ingredients, improving the texture and application experience of the product.

Furthermore, stearic acid can also serve as a thickening agent in San Shield, making the product more viscous. This is particularly important for products such as creams or body lotions that require a higher viscosity.

Stearic acid can be derived from various plant oils, and here are some common plant sources:


Palm oil:

Palm oil is one of the most common sources of stearic acid. It is extracted from the fruits of palm trees and is an economically viable and widely used plant oil.


Coconut oil:

Coconut oil is also a common source of stearic acid. It is extracted from the flesh of coconuts and contains a rich amount of stearic acid along with other fatty acids.


Sesame oil:

Sesame oil is a plant oil with multiple fatty acids, including stearic acid. It can be cold-pressed or hot-pressed from sesame seeds.


Almond oil:

Almond oil is a lightweight plant oil commonly used in skincare products. It contains vitamin E and multiple fatty acids, including stearic acid.


Grape seed oil:

Grape seed oil is extracted from grape seeds and is rich in various fatty acids, including stearic acid. It has a lightweight texture and is widely used in skincare products.

These plant oils can provide a rich source of stearic acid, hence you may come across them as one of the main ingredients when selecting skincare products. 


It’s important to note that everyone’s reaction to these ingredients may vary. It is recommended to perform a patch test on a small area of skin before using any new product to ensure there are no adverse reactions.