Ceratonia Siliqua (Carob) Gum
INCI: Locust Bean
Reviewed by Rosie · Last updated 14 Aug 2026
Also known as: Locust Bean, Ceratonia Siliqua Gum
Made from the carob tree Also known as locust bean gum
EWG Safety Score
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What Is Ceratonia Siliqua (Carob) Gum?
Ceratonia siliqua (carob) gum is made from the carob tree, and is also known as locust bean gum. It helps enhance the texture of skin care products.
How It Works
Ceratonia siliqua gum is a hydrocolloid, meaning it absorbs and binds water molecules within a formulation. This thickening action stabilises emulsions by creating a protective barrier around oil droplets, preventing them from coalescing and separating. The result is a formulation that maintains its intended texture and performance throughout its shelf life.
When applied to skin, the gum may form a light, breathable film that helps lock in moisture without occluding pores significantly. This film-forming action can temporarily smooth skin texture and support the efficacy of other active ingredients by helping them remain in contact with the skin.
Clinical Evidence & References
Ceratonia siliqua gum has a long history of safe use in food and cosmetics, but direct clinical evidence specific to skincare benefits is limited. Most data centres on its safety profile and functional performance as a stabiliser and thickener rather than its impact on skin health.
The ingredient is well-tolerated in cosmetic applications and is not associated with sensitising effects in most individuals. However, as with any plant-derived ingredient, some people may experience contact sensitivity. Further research would be beneficial to establish any direct benefits beyond its structural and textural contributions to formulations.
How to Use
Ceratonia siliqua gum is typically incorporated into formulations by manufacturers rather than used as a standalone product. When present in a moisturiser or serum, apply as directed by the product instructions. Because it is a supporting ingredient rather than an active, its presence should not change your application routine. If you are introducing a new product containing this ingredient, use it consistently to assess how your skin responds.
Safety & Precautions
Frequently Asked Questions
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Ceratonia Siliqua (Carob) Gum is a variant of Ceratonia Siliqua Gum, the form you will most often see on an ingredients list.
A plant-derived thickener that stabilises emulsions and enhances product texture
Related Ingredients
Ceratonia Siliqua Gum
A plant-derived thickener that stabilises emulsions and enhances product texture
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