Hydrolyzed Ceratonia Siliqua Seed Extract: What Is It, Cosmetic Uses, Benefits & Side Effects

Curious about this ingredient? In this article we're explaining exactly what it is and why it's used within cosmetic formulations.
Updated on: June 27, 2025
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We verify all information on this page using publicly available nomenclature standards from The Personal Care Products Council (PCPC), the European Commission's CosIng database and documentation provided directly by ingredient manufacturers. Our analysis is based on technical data from these sources to ensure accuracy and reliability.

What Is Hydrolyzed Ceratonia Siliqua Seed Extract?

Hydrolyzed Ceratonia Siliqua Seed Extract is a plant-derived ingredient made from the seeds of the carob tree, a Mediterranean evergreen known for its chocolate-like pods. The seeds are naturally rich in proteins and sugars. To create the cosmetic grade extract, manufacturers clean and mill the seeds, separate the protein portion, then break those large proteins into smaller, water-soluble peptides through controlled enzymatic or acid hydrolysis. The resulting liquid is filtered, dried and standardized so it can blend smoothly into skincare formulas.

Carob has been used in food for centuries, but its journey into beauty products began in the late 20th century when formulators sought gentle, plant-based alternatives to animal collagen and synthetic conditioners. Because the hydrolyzed peptides are small, they can sit comfortably on skin, forming a light, breathable film that helps hold moisture.

You will commonly spot Hydrolyzed Ceratonia Siliqua Seed Extract in hydrating face creams, lightweight lotions, soothing after-sun gels, sheet masks and serums marketed for plumping or anti-aging benefits. It is also added to rinse-off cleansers and micellar waters to stop them feeling drying after use.

Hydrolyzed Ceratonia Siliqua Seed Extract’s Cosmetic Benefits/Uses

Its primary role in skincare is skin conditioning, which means it helps keep skin feeling soft, smooth and healthy. The peptide-rich extract attracts water to the skin surface, supports the skin’s natural barrier and gives formulas a silky glide, making them more pleasant to apply. Over time this translates into improved suppleness and a fresher appearance.

Who Can Use Hydrolyzed Ceratonia Siliqua Seed Extract

This gentle, water-soluble conditioner is generally suitable for all skin types. Dry skin appreciates its moisture-binding peptides, oily and combination complexions benefit from its lightweight feel that does not clog pores, and sensitive skin usually tolerates it thanks to its low irritation profile. The only group that may need extra caution are individuals with known allergies to carob or other legumes because cross-reactivity could occur.

Because the extract comes entirely from carob seeds and no animal derivatives are needed during standard manufacturing, it is considered vegan and vegetarian friendly.

Current safety data show no specific risks for pregnant or breastfeeding women when the ingredient is used topically in cosmetic concentrations. This is not medical advice and anyone who is pregnant or nursing should still confirm product choices with a healthcare professional.

The extract does not make skin more sensitive to sunlight so no extra sun precautions are required beyond normal daily protection.

Potential Side Effects/Adverse Reactions

Responses to topical Hydrolyzed Ceratonia Siliqua Seed Extract vary from person to person. The points below outline potential side effects that could occur even though most users will not experience them when the ingredient is used at standard cosmetic levels.

  • Mild redness or stinging in very sensitive skin
  • Itching or small bumps in people with a carob or legume allergy
  • Transient stickiness if a high-dose formula is layered under heavy products
  • Rare cases of contact dermatitis from individual intolerance to the plant peptides

If any of these reactions develop stop using the product and consult a healthcare professional.

Comedogenic Rating

Rating: 0 (non-comedogenic)

Hydrolyzed Ceratonia Siliqua Seed Extract is water soluble and leaves no oily film, so it does not block pores or trap debris. Its small peptides sit lightly on the skin then rinse away easily in normal cleansing routines, giving it a very low likelihood of causing blackheads or pimples.

Because of this, the extract is generally suitable for people prone to acne or frequent breakouts. As always the overall formula matters, so look at the full ingredient list if congestion is a concern.

One extra note: products that combine this extract with heavier oils, waxes or silicones could still feel rich on the skin, but any clogging risk would come from those other ingredients, not from Hydrolyzed Ceratonia Siliqua Seed Extract itself.

Summary

Hydrolyzed Ceratonia Siliqua Seed Extract is a plant based skin conditioner that draws water to the surface, supports the skin barrier and adds a silky glide to creams, gels and serums. It delivers these benefits through tiny, moisture binding peptides created by breaking down the natural proteins found in carob seeds.

While it is not yet as famous as hyaluronic acid or glycerin, its popularity is rising thanks to the push for vegan friendly alternatives to animal collagen and its pleasant, light feel on the skin.

Current research shows the extract is safe for most users with only a small chance of irritation in those allergic to carob or other legumes. Still, skin can be unpredictable, so it is smart to patch test any new product that contains Hydrolyzed Ceratonia Siliqua Seed Extract before adding it to your daily routine.

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