COSRX The Vitamin C 13 Serum Versus Numbuzin No.5 Vitamin Concentrated Serum

Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.

1,2-Hexanediol is a multi-tasker ingredient. It acts as a preservative to increase shelf-life and can aid other preservatives in preventing microbe growth. 1,2-Hexanediol also helps the skin retain moisture as a humectant.

We don't have a description for Neopentyl Glycol Dicaprate.

Caprylic/Capric Triglyceride is an emollient, solvent, and texture enhancer. It is considered a skin-softener by helping the skin prevent moisture loss.

Sorbitol is a sugar alcohol. It is a hydrating and moisturizing agent created from the reduction process of glucose.

Bifida Ferment Lysate is derived from the fermentation of Bifida bacteria (often with dairy). It is a probiotic and helps to strengthen our skin's microbiome.

Chondrus Crispus Extract comes from a red algae native to the northern Atlantic coasts of Europe and North America.

Butyrospermum Parkii Butter is a plant lipid from the fruit of the Shea Tree. It is an effective skin hydrator and emollient.

This ingredient is also called sugarcane extract. It is a moisturizing humectant and has skin soothing properties.

Alpha-Arbutin is made from hydroquinone and glucose. It may also be derived from the fermentation of soybeans.

Sodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.

Melia Azadirachta Flower Extract is from the Neem tree. Neem trees originate from India.

Ocimum Sanctum Leaf Extract comes from the Holy Basil plant. Holy Basil is native to India.

Melia Azadirachta Leaf Extract is extract from the neem plant.

Curcuma Longa Root Extract is from the spice, turmeric. Besides being a healthy and delicious spice, turmeric also has plenty of skincare benefits. It has anti-inflammatory, antioxidant, and anti-microbial properties.

Corallina Officinalis Extract is from the red seaweed, Corallina Officinalis. This seaweed is found all over the world but is most common in the rocky shores of Great Britain and Ireland.

Tremella Fuciformis Extract comes from the tremella fuciformis mushroom, also known as snow mushroom or white jelly mushroom.

Pentylene glycol is typically used within a product to thicken it. It also adds a smooth, soft, and moisturizing feel to the product. It is naturally found in plants such as sugar beets.

Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.

You might know this ingredient as Ethyl Ascorbic Acid, a more stable version of ascorbic acid.

Bisabolol is pimarily used to add fragrance to a product. However, it is also famous for helping soothe skin.

Tromethamine is an aliphatic compound. An aliphatic compound is an organic compound with open-chained carbon atoms. It is synthetically created. Tromethamine is used to balance pH and improve texture.

Ethylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.

Adenosine is in every living organism. It is one of four components in nucleic acids that helps store our DNA.

Hydrogenated Lecithin is created from the hydrogenation of lecithin. Hydrogenation is a chemical reaction between molecule hydrogen and another element.

Allantoin plays a role in soothing and moisturizing the skin. Because of this, it is often added to products with strong active ingredients.

Glutathione is an antioxidant naturally found in our bodies. It is made up of three amino acids: glycine, cysteine, and glutamic acid.

Ceramide NP is a type of ceramide.

Beta-Glucan is a polysaccharide. It can be derived from the cell walls of seaweed, oats, yeast, and fungi.

Dipotassium Glycyrrhizate comes from licorice root.

Tocopherol (also known as Vitamin E) is a common antioxidant used to help protect the skin from free-radicals and strengthen the skin barrier. It's also fat soluble - this means our skin is great at absorbing it.

Ascorbic Acid is is pure Vitamin C. This form makes up the largest amount of vitamin C found naturally in our skin.

Ascorbyl Glucoside is a stable form of Vitamin C. It is created by combining glucose from starch.

Tocopheryl Acetate is AKA Vitamin E. It is an antioxidant and protects your skin from free radicals. Free radicals damage the skin by breaking down collagen.

We don't have a description for Hydroxypropyl Cyclodextrin.

Ubiquinone (Coenzyme Q10) is a molecule already found in our bodies. It is a potent antioxidant and skin-soothing ingredient.

Thioctic Acid is an enzyme and antioxidant. A more common name for this is Alpha Lipoic Acid.

Potassium hydroxide is commonly known as caustic potash. It is used to fix the pH of a product or as a cleaning agent in soap. In cleansers, it is used for the saponification of oils.

A type of fatty alcohol. Fatty Alcohols are most often used as an emollient or to thicken a product. They are usually derived from natural fats and oils and therefore do not have the same drying or irritating effect as traditional alcohols.

Carbomer is a polymer of acrylic acid. Its main role is to create gel consistency within products.

Xanthan gum is used as a stabilizer and thickener within cosmetic products. It helps give products a sticky, thick feeling - preventing them from being too runny.

Disodium EDTA plays a role in making products more stable by aiding other preservatives.