Antioxidant protection of macadamia nut oil in cosmetics

Properties, uses and antioxidant protection of macadamia nut oil in cosmetics

The skin, in addition to being the largest organ in our body, acts as a protective shield against external aggressions from the environment, such as UV rays, atmospheric pollution or cold. Therefore, it is of great importance to protect it every day to promote its regeneration and ensure that it fulfills its function.

One of the ingredients that are usually used in natural cosmetic formulations are essential oils, since on the one hand they provide pleasant aromas and on the other, they convey numerous compounds that serve as nutrients for the skin.

Essential oils are found naturally in many fruits, seeds or plants, and to fully preserve their properties, they must be extracted exclusively by physical cold pressing methods.

The properties of macadamia nut oil in the cosmetics industry

Currently, the use of macadamia nut oil as an ingredient in cosmetic products is growing exponentially due to the many benefits and nutrients it provides to the skin, among which are:

  • It is rich in oleic acid, mutrient that stands out for its high penetration capacity on the skin, exerting an extra benefit on dry skin.
  • It has a high concentration of group B vitamins. Vitamin B3 or niacin stands out, which is capable of improving the skin’s repair mechanisms against external aggressions such as UV rays from the sun.
  • Thanks to its protein content, it provides elasticity and firmness to the skin.
  • Provides essential trace elements. Selenium provides flexibility to tissues and delays skin aging. Zinc enhances collagen synthesis.

Delaying the oxidation of macadamia nut oil using antioxidants

However, the fatty acid composition of macadamia nut oil makes it very prone to oxidation and, consequently, to the loss of these benefits. As a solution, and to keep all these nutrients intact so that they can exert their correct function on the skin, the cosmetic industry adds a series of antioxidants, which in most cases are antioxidants of synthetic origin. One of these artificial antioxidants is TBHQ (Tertiary butylhydroquinone, E-319), used for its high effectiveness in vegetable oils.

But today’s consumers are looking for cosmetic products that provide the same benefits, without the use of synthetic ingredients or additives, especially those whose use can be questioned due to its impact in health.

In this sense, manufacturers of personal care products must seek new antioxidant solutions, of natural origin and with the same antioxidant effectiveness.

The effects of BIOXAN® T90 on macadamia nut oil for cosmetics

Next, we present the results of a Rancimat® test, an accelerated oxidation test carried out to compare the antioxidant power of TBHQ and BIOXAN® T90 in a sample of macadamia nut oil. The trial was carried out at BTSA’s R&D Center, using the same dose for each antioxidant and the same parameters, such as airflow and temperature.

  • Macadamia nut oil (without antioxidant)
  • Macadamia nut oil + TBHQ
  • Macadamia nut oil + BIOXAN® T90


The data obtained reflects that BIOXAN® T90 not only equals, but exceeds the performance of TBHQ to stabilize a macadamia nut oil sample, showing that with natural products the same results can be obtained when stabilizing a product and protect it against oxidation.

BIOXAN® T90 is a 100% natural antioxidant made from concentrated tocopherols from the distillation of Non-GMO soybean oil. In addition, it has the COSMOS APPROVED seal, a quality guarantee on the origin of its ingredients in aspects such as its ecological procedure and processing, respect for biodiversity and the absence of GMO and petrochemicals, among others.

Learn more about BIOXAN® and about all our antioxidants and products for the cosmetic industry.

⬇ Download our ebook and discover the keys to choosing an additive or ingredient supplier⬇Ebook Supplier