Tetrahexyldecyl Ascorbate

What It Does

Say hello to stable Vitamin C! Our Oil Soluble Vitamin C is one of the most studied active vitamin C ingredients in the world. Ultra stable, this Vitamin C ester is a proven antioxidant, shown to help clarify and brighten the skin and stimulate collagen production. It also helps reduce the damaged feel of hair.

Formulating with plain old ascorbic acid has many drawbacks - it is notoriously unstable and has poor availability for use in skin. This means formulators must use more, leading to irritation. Oil Soluble Vitamin C is considered an active Vitamin C. It is extremely stable, making formulation easy. It also penetrates the epidermis three-fold compared to ascorbic acid, so you can use less with even greater results. When Oil Soluble Vitamin C is in contact with the skin, it separates into Vitamin C and Isopalmitic acid thanks to an enzyme called esterase.

Oil Soluble Vitamin C has been shown to:
- Reduce UV induced skin pigmentation (3% use level, in vivo, Quasi-Drug in Japan)
- Reduce the appearance of age spots (10% use level, in vivo)
- Increase collagen synthesis (0.1% use level, in vitro)

Oil Soluble Vitamin C can also be used at 0.5% in an oil serum applied to hair for cuticle repair. The ester in our Oil Soluble Vitamin C reacts with the amino acids of damaged hair and makes the hair more hydrophobic, leaving it feeling shinier and healthier.

How It's Made

Ascorbic Acid from non-GMO corn and synthetic Isopalmitoyl Chloride are combined through chemical synthesis to form tetrahexyldecyl ascorbate.

Nut Free
Nut Free
Gluten Free
Gluten Free
Made With Science
Made With Science

Tetrahexyldecyl Ascorbate

Geographical Origin


Ingredient Origin

Plant (Corn), Synthetic


Skin Brightening
Hair Repair

Types of Formulas

Serums, Lotions, Creams, Oils and more.
Not intended for use in sprays or in topical products for the eye area.

Use Level

0.5 - 20%

Color / Odor / Appearance

Colorless to Pale Yellow / Virtually Odorless / Thin Oil


Oils, Butters, Waxes

Saponification Value

None—although it’s oil soluble, it’s not an oil.

Percent Active


Natural Index ISO 16128



Store in closed container in a dark, cool and dry place.

Shelf Life

3 years from date of manufacture. See retest date on Certificate of Analysis.


For external use only. Do not apply directly to skin. Follow recommended use level guidelines when formulating. Do not use in sprays or products intended for the eye or lip areas. Keep out of reach of children.

Why It's Special

Oil Soluble Vitamin C is a triple threat - efficacious, stable, and less irritating than other forms of vitamin c.

Made with Science
Organic Synthesis
Organic Synthesis

Ascorbic Acid from corn and Isopalmitoyl Chloride are combined through chemical synthesis to form tetrahexyldecyl ascorbate.

Make It Yours
Vitamin C + Squalane Serum formula with oranges
Vitamin C + Squalane Serum

This lightweight, brightening serum is perfect for any night time routine. Squalane offers instant hydration, while our Oil Soluble Vitamin C brightens the appearance of skin.

print recipe

Mixing Bowl
2 oz Bottle With Dropper

Skill Level: Easy

Makes 60 grams or 2 ounces.

1 Squalane 65.0%  39.0 g
2 Oil Soluble Vitamin C 15.0%  9.0 g
3 Organic Jojoba Oil 20.0%  12.0 g
TOTAL 100%  60.0 g

Ensure all equipment is clean and sterilized, and that everything is completely dry before proceeding.

Add ingredients 1-3 to the mixing bowl, one by one, stirring after each addition. When the mixture appears homogenous, pour into the bottle. Be careful not to fill the product all the way to the top - otherwise the bottle will overflow when inserting the dropper.

INGREDIENTS: Squalane, Simmondsia Chinensis (Jojoba) Seed Oil, Tetrahexyldecyl Ascorbate

This recipe is only a representative formulation to serve as an example of how these ingredients can be used. It is not a commercial product. Please conduct own testing as this formulation has not been subjected to testing for either performance, efficacy or safety.

Before handling ingredients, read all product information and safety data sheets for the ingredients to understand any handling instructions, safety precautions, and disposal instructions.