Solid Perfume Separation Issue & Formulation Adjustment
คำถาม
I am making a solid perfume and encountered a problem where the oil/fragrance separates and sinks to the bottom, while the wax solidifies on top. I need a solution to prevent this phase separation and achieve a stable product.
Could you provide guidance on:
1. How to adjust the formula to prevent separation?
2. Is a preservative necessary for this type of waterless formula, and if so, how much should be used?
3. Can I use common cooking oils like coconut, palm, olive, or almond oil as the oil base in the formula, or are there specific types of oils recommended for solid perfume?
คำตอบ
Solution for Solid Perfume Separation
You experienced separation in your solid perfume, with the oil/fragrance sinking and the wax solidifying on top. This is a common issue in oil-wax formulas when the phases aren't properly blended. The recommended solution is to add an ingredient that helps combine the oil and wax.
Based on the previous advice, adding Oil Blender at 3% of the formula should solve this problem by helping to emulsify or blend the oil and wax phases together.
Here is the adjusted formula and the amounts needed for a total batch size of 500g (which will make 100 pieces of 5g each):
Adjusted Formula (500g Total)
- Oil Blender: 3% (15 g)
- Fractionated Coconut Oil: 48.5% (242.5 g)
- Natural White Beeswax: 24.25% (121.25 g)
- Perfume compound: 23.75% (118.75 g)
- Vitamin E (Tocopheryl Acetate): 0.5% (2.5 g)
- Total: 100% (500 g)
Revised Process
- Combine the Natural White Beeswax, Fractionated Coconut Oil, and Oil Blender in a heat-safe container.
- Gently heat the mixture (e.g., using a microwave or double boiler) until the beeswax is completely melted and all ingredients are fully combined. Aim for a temperature around 60-70°C. Stir well.
- Remove from heat and let the mixture cool slightly, but not to the point where it starts to thicken or solidify. It should still be liquid.
- Add the Perfume compound and Vitamin E (Tocopheryl Acetate) to the liquid mixture.
- Stir thoroughly and continuously as the mixture cools. This continuous stirring is crucial to keep the oil/perfume evenly dispersed within the wax as it begins to set. Continue stirring until the mixture starts to become cloudy or slightly thicker.
- Quickly pour the mixture into your aluminum tins before it hardens completely.
- Allow the tins to sit undisturbed at room temperature until fully solidified.
Regarding Preservatives
As discussed previously, since this formula is waterless, a preservative like Mild Preserved Eco is not strictly necessary unless the packaging allows for moisture contamination. However, if you wish to add it for extra certainty, you can include Mild Preserved Eco at 1% of the formula. You would add it in step 4 along with the perfume and Vitamin E.
If you add 1% Mild Preserved Eco, the formula percentages and amounts for a 500g batch would be slightly adjusted:
- Oil Blender: 3% (15 g)
- Mild Preserved Eco: 1% (5 g)
- Fractionated Coconut Oil: 48% (240 g)
- Natural White Beeswax: 24% (120 g)
- Perfume compound: 23.5% (117.5 g)
- Vitamin E (Tocopheryl Acetate): 0.5% (2.5 g)
- Total: 100% (500 g)
Choosing Oils
Regarding your questions about using cooking oils (coconut, palm, olive, almond), it is important to use oils that are stable and do not easily go rancid, as rancidity can negatively affect the fragrance over time. Fractionated Coconut Oil is recommended because it is very stable and odorless. Other stable natural oils include Jojoba Oil and Olive CLEAR. Avoid standard cooking oils like regular coconut oil, palm oil, olive oil, or almond oil, as they are prone to rancidity.
By adding Oil Blender and following the revised process with continuous stirring during cooling, you should achieve a stable, non-separating solid perfume.
Relevant products mentioned:
- Natural White Beeswax
- Fractionated Coconut Oil
- Perfume compound (examples like Apritone, Floral Background, Bouquet Freshener)
- Vitamin E (Tocopheryl Acetate)
- Oil Blender
- Mild Preserved Eco
ผลิตภัณฑ์ที่เกี่ยวข้องที่กล่าวถึง
Vitamin E (Tocopheryl Acetate)
Fractionated Coconut Oil
Natural White Beeswax (USA, Melting 62C, Deodorized)
Mild Preserved Eco™ (Preservative-Free)
Oil Blender™ (Polyglyceryl-3 Diisostearate)
Bouquet Freshener