Cleansing Oil Formulation: Camellia Oil, Laureth-4 Ratio, and Shelf Life
คำถาม
I plan to formulate a Cleansing Oil using Camellia Oil. I need guidance on the following aspects to ensure maximum product longevity and efficacy:
- What specific antioxidant (สารกันหืน) and preservative (สารกันเสีย) should be used to extend the product's shelf life, and what are the recommended usage ratios?
- What oil-soluble skin-nourishing extracts can be incorporated to achieve the best performance? (Assuming the use of an emulsifier like Laureth-4 (Oil Milk™) to create the oil-to-milk effect.)
คำตอบ
Cleansing Oil Formulation Guidance (Camellia Oil & Laureth-4)
The pre-selected product, Laureth-4 (Oil Milk™) (ID: 858), is an excellent choice for creating a cleansing oil that turns into a milky emulsion upon contact with water.
1. Antioxidant (Shelf Life) and Preservative
Since cleansing oil is an anhydrous (water-free) product, you do not need a traditional preservative (สารกันเสีย). The main concern is preventing the Camellia oil from going rancid (oxidation), which requires an antioxidant (สารกันหืน).
- Recommended Antioxidants (Oil-Soluble):
- Tocotrienols (Oil, 50%, Cosmetics) (ID: 5986): A superior form of Vitamin E, highly effective at preventing oil oxidation.
- Dimethylmethoxy Chromanol (1%, Oil Based) (ID: 30531): A powerful, modern antioxidant that offers excellent protection against free radicals and oxidation.
- Rosemary Oleoresin Extract (ROE) (ID: 167): A natural and very effective antioxidant for oils.
2. Recommended Usage Percentages
A standard cleansing oil formula using Laureth-4 (Oil Milk™) is simple:
| Ingredient | Recommended Percentage | Function |
|---|---|---|
| Camellia Oil | 79.0% - 89.9% | Base oil, nourishing |
| Laureth-4 (Oil Milk™) (ID: 858) | 10% - 20% | Emulsifier (turns oil to milk) |
| Antioxidant (e.g., Tocotrienols) | 0.1% - 1.0% | Prevents rancidity |
| Oil-Soluble Extracts | 0% - 10% | Skin benefits |
- Laureth-4 (ID: 858) Usage Rate:
- 10-15%: Suitable for dry or sensitive skin.
- 20-30%: Suitable for normal to oily skin, providing stronger cleansing power.
3. Skin-Nourishing Extracts
To maximize performance, you should add oil-soluble extracts that provide soothing or anti-inflammatory benefits, as these are often desired in cleansing products.
- Recommended Oil-Soluble Extracts:
- Glycyrrhizic acid (Oil Soluble Licorice Extract) (ID: 127336): Excellent for soothing irritated skin and reducing redness.
- Avena sativa (Oat) Extract (Oil Soluble) (ID: 1252): Provides moisturizing and anti-irritant properties, helping to maintain the skin barrier during cleansing.
ผลิตภัณฑ์ที่เกี่ยวข้องที่กล่าวถึง
Laureth-4 (Oil Milk™)
Avena sativa (Oat) Extract (Oil Soluble)
Tocotrienols (Oil, 50%, Cosmetics)
