Formulating an Organic Oil Blend for Sensitive Skin: Rose Hip Oil, Mixing, and Preservation

Asked by: aon.ohn On: May 12, 2017 Product Type: Cosmetics

Question

I am interested in creating an organic oil blend for skin nourishment. I have a few questions:

1. Can Rose Hip Oil be used at 100% concentration, especially for sensitive skin?
2. Is it possible to mix Rose Hip Oil with other oils to reduce cost? If so, could you recommend suitable oils for mixing?
3. If I add Vitamin E, is that sufficient to prevent the oil from going rancid? Do I still need to add a `สารกันเสีย` (preservative) to the oil blend?

Answer

Organic Oil Blend for Skin Nourishment

Here is information regarding your questions about creating an organic oil blend for skin nourishment:

1. Using Rose Hip Oil at 100% on Sensitive Skin

Yes, Rose Hip Oil can be used at 100% concentration. Based on product information, it is suitable for nourishing and restoring the balance of dry, sensitive skin and can help reduce skin inflammation.

2. Mixing Oils to Reduce Cost

To reduce the cost of your oil blend while maintaining beneficial properties, you can mix Rose Hip Oil with other carrier oils. Good options commonly used in skincare include:

  • Sweet Almond Oil: Suitable for all skin types, it moisturizes, prevents dryness and irritation, and is well-absorbed. It contains vitamins A, B1, B2, B6, and E.
  • Grape Seed Oil: Commonly used in skincare, it contains antioxidants that help protect the skin. It helps retain moisture and can be beneficial for oily skin.

You can adjust the ratio based on your desired cost and the properties you want from each oil.

3. Preservatives for Oil Blends

For a pure oil blend (an anhydrous formula, meaning it contains no water), you do not need a traditional preservative to protect against microbial growth like bacteria or fungi. Microorganisms require water to grow.

However, oils can oxidize and become rancid, developing an unpleasant smell. To prevent this oxidation, you should use an antioxidant.

  • Vitamin E (Tocopheryl Acetate): This can help protect oils from deterioration due to oxidation. It is effective but has lower efficiency compared to some other options.
  • Rosemary Oleoresin Extract (ROE): ROE is a highly effective antioxidant for preventing rancidity in natural oils, especially when used with Vitamin E. However, be aware that ROE has a dark color and a strong smell which might affect your final product.

Using an antioxidant like Vitamin E or ROE will help extend the shelf life of your oil blend by preventing it from going rancid. Vitamin E alone can help, but ROE is generally more potent for preventing oxidation, although it has the mentioned drawbacks.