Sunscreen Formula is Oily and Sticky: Seeking Adjustment
คำถาม
My sunscreen formula is oily and sticky. What is causing this, and how can I adjust the formula to fix it?
My current formula is:
- SPF Protect Plus 20%
- Lipidsoft 10%
- Vit E 1%
- B3 4%
- Aloe Vera Extract 2%
- Light Cream Maker 1.5%
- Preservative 1%
- Water to 100%
คำตอบ
The oiliness and stickiness in your sunscreen formula are caused by the relatively high amount of oil-based ingredients, particularly SPF Protect Plus, which is already an oil base. When combined with Lipidsoft and Vitamin E, which is a high-viscosity oil, the cream texture becomes excessively oily and sticky.
Following the staff's recommendation, removing 10% Lipidsoft and 1% Vitamin E from the formula will significantly reduce the amount of oil-based ingredients. This will result in a lighter cream texture and reduce stickiness, while maintaining the sun protection efficacy from SPF Protect Plus at the original percentage.
Revised Formula:
- SPF Protect Plus 20%
- B3 4%
- Aloe Vera Extract 2%
- Light Cream Maker 1.5%
- Preservative 1%
- Water to 100%
This adjustment should help you achieve a more comfortable sunscreen texture that doesn't leave an oily or sticky feeling on the skin.
ผลิตภัณฑ์ที่เกี่ยวข้องที่กล่าวถึง
Vitamin E (Tocopheryl Acetate)
Safe-B3™ (Vitamin B3, Niacinamide)
Aloe Vera Extract (extraction ratio 10:1 FullAssay™)
Light Cream Maker™
LipidSoft™ C1215 (C12-15 alkyl benzoate)
PE 1090 Preservative