Using Natural Oils Like Rose Hip Oil at 100%

Yes, natural oils like Rose Hip Oil can be used at 100% concentration directly on the skin. Many people use pure carrier oils as a simple moisturizer or treatment.

• Preservatives: Generally, preservatives are not needed in pure oil formulations because bacteria and fungi require water to grow. Since 100% oil is anhydrous (contains no water), microbial contamination is not a concern. However, oils can be prone to oxidation, which can cause them to go rancid. Adding an antioxidant like Vitamin E can help extend the shelf life of the oil.

• Absorption Enhancers: While pure oils are absorbed by the skin, the absorption rate and feel can vary depending on the specific oil. You can add other ingredients to improve the texture, spreadability, or absorption rate if desired, but it's not necessary for the oil to be effective.

• Efficacy Boosters: You can certainly add other active ingredients or beneficial oils to enhance the properties of the formulation. For example, you might add essential oils for fragrance or specific therapeutic benefits (used at low concentrations), or other carrier oils with different fatty acid profiles to create a blend tailored to specific skin needs. However, adding anything else means it's no longer 100% Rose Hip Oil.

In summary, using Rose Hip Oil at 100% is a valid and common practice. You do not need a preservative, but consider an antioxidant. You can add other ingredients if you want to modify the feel or add extra benefits, but it's not required for basic use.